diff --git a/src/application/controllers/backend_api.php b/src/application/controllers/backend_api.php
index e7afd06d..fafe8bf3 100644
--- a/src/application/controllers/backend_api.php
+++ b/src/application/controllers/backend_api.php
@@ -850,8 +850,13 @@ class Backend_api extends CI_Controller {
      */
     public function ajax_validate_username() {
         try {
-            // We will use the function in the admins_model because it is sufficient for 
-            // the rest user types for now (providers, secretaries).
+            // $_POST['record_exists'] is treated like a string in this method and this 
+            // is making the validation algorithm fail. So we need to convert the value 
+            // into bool before validating the username.
+            $_POST['record_exists'] = ($_POST['record_exists'] == 'true') ? TRUE : FALSE;
+            
+            // We will only use the function in the admins_model because it is sufficient 
+            // for the rest user types for now (providers, secretaries).
             $this->load->model('admins_model');
             $is_valid = $this->admins_model->validate_username($_POST['username'], $_POST['record_exists']);
             echo json_encode($is_valid);
diff --git a/src/application/models/admins_model.php b/src/application/models/admins_model.php
index ced992f7..ca249818 100644
--- a/src/application/models/admins_model.php
+++ b/src/application/models/admins_model.php
@@ -357,10 +357,11 @@ class Admins_Model extends CI_Model {
      */
     public function validate_username($username, $record_exists) {
         $num_rows = $this->db->get_where('ea_user_settings', array('username' => $username))->num_rows();
-        if (($num_rows == 0 && $record_exists == FALSE) || ($num_rows == 1 && $record_exists == TRUE)) {
-            return TRUE;
+        if (($num_rows == 0 && $record_exists == FALSE) || ($num_rows == 1 && $record_exists == TRUE) 
+                || ($num_rows == 0 && $record_exists == TRUE)) {
+            return TRUE; // valid
         } else {
-            return FALSE;
+            return FALSE; // not valid
         }
     }
 }
diff --git a/src/application/views/backend/users.php b/src/application/views/backend/users.php
index 886ef5a8..b3ef5f41 100644
--- a/src/application/views/backend/users.php
+++ b/src/application/views/backend/users.php
@@ -1,5 +1,13 @@
 <script type="text/javascript" 
         src="<?php echo $base_url; ?>assets/js/backend_users.js"></script>
+        
+<script type="text/javascript" 
+        src="<?php echo $base_url; ?>assets/js/backend_users_admins.js"></script>
+<script type="text/javascript" 
+        src="<?php echo $base_url; ?>assets/js/backend_users_providers.js"></script>
+<script type="text/javascript" 
+        src="<?php echo $base_url; ?>assets/js/backend_users_secretaries.js"></script>
+        
 <script type="text/javascript" 
         src="<?php echo $base_url; ?>assets/js/libs/jquery/jquery-ui-timepicker-addon.js"></script>
 <script type="text/javascript" 
diff --git a/src/assets/js/backend_users.js b/src/assets/js/backend_users.js
index 7d8c19a0..58fe868d 100644
--- a/src/assets/js/backend_users.js
+++ b/src/assets/js/backend_users.js
@@ -7,6 +7,13 @@
 var BackendUsers = {
     MIN_PASSWORD_LENGTH: 7, 
     
+    /**
+     * Contains the current tab record methods for the page.
+     * 
+     * @type AdminsHelper|ProvidersHelper|SecretariesHelper
+     */
+    helper: {},
+    
     /**
      * This flag is used when trying to cancel row editing. It is
      * true only whenever the user presses the cancel button.
@@ -22,14 +29,7 @@ var BackendUsers = {
      * @type {bool}
      */
     enableSubmit: false,
-    
-    /**
-     * Contains the current tab record methods for the page.
-     * 
-     * @type AdminsHelper|ProvidersHelper|SecretariesHelper
-     */
-    helper: {},
-    
+        
     /**
      * Initialize the backend users page.
      * 
@@ -91,7 +91,7 @@ var BackendUsers = {
                 var postData = { 'key': '' };
                 $.post(postUrl, postData, function(response) {
                     //////////////////////////////////////////////////////////
-                    console.log('Get all db providers response:', response);
+                    //console.log('Get all db providers response:', response);
                     //////////////////////////////////////////////////////////
                     
                     if (!GeneralFunctions.handleAjaxExceptions(response)) return;
@@ -134,7 +134,7 @@ var BackendUsers = {
             
             $.post(postUrl, postData, function(response) {
                 ///////////////////////////////////////////////////////
-                console.log('Validate Username Response:', response);
+                //console.log('Validate Username Response:', response);
                 ///////////////////////////////////////////////////////
                 if (!GeneralFunctions.handleAjaxExceptions(response)) return;
                 if (response == false) {
@@ -152,1444 +152,14 @@ var BackendUsers = {
         
         // -----------------------------------------------------------------
         
-        /**
-         * Event: Filter Admins Button "Click"
-         * 
-         * Filter the admin records with the given key string.
-         */
-        $('.filter-admins').click(function() {
-            var key = $('#admins .filter-key').val();
-            $('.selected-row').removeClass('selected-row');
-            BackendUsers.helper.resetForm();
-            BackendUsers.helper.filter(key);
-        });
-        
-        /**
-         * Event: Filter Admin Row "Click"
-         * 
-         * Display the selected admin data to the user.
-         */
-        $(document).on('click', '.admin-row', function() {
-            if ($('#admins .filter-admins').prop('disabled')) {
-                $('#admins .filter-results').css('color', '#AAA');
-                return; // exit because we are currently on edit mode
-            }
-            
-            var admin = { 'id': $(this).attr('data-id') };
-            $.each(BackendUsers.helper.filterResults, function(index, item) {
-                if (item.id === admin.id) {
-                    admin = item;
-                    return;
-                }
-            });
-            BackendUsers.helper.display(admin);
-            $('.selected-row').removeClass('selected-row');
-            $(this).addClass('selected-row');
-            $('#edit-admin, #delete-admin').prop('disabled', false);
-        });
-        
-        /**
-         * Event: Add New Admin Button "Click"
-         */
-        $('#add-admin').click(function() {
-            BackendUsers.helper.resetForm();
-            $('#admins .add-edit-delete-group').hide();
-            $('#admins .save-cancel-group').show();
-            $('#admins .details').find('input, textarea').prop('readonly', false);
-            $('#admins .filter-admins').prop('disabled', true);
-            $('#admins .filter-results').css('color', '#AAA');
-            $('#admin-password, #admin-password-confirm').addClass('required');
-            $('#admin-notifications').prop('disabled', false);
-        });
-        
-        /**
-         * Event: Edit Admin Button "Click"
-         */
-        $('#edit-admin').click(function() {
-            $('#admins .add-edit-delete-group').hide();
-            $('#admins .save-cancel-group').show();
-            $('.filter-admins').prop('disabled', true);
-            $('#admins .filter-results').css('color', '#AAA');
-            $('#admins .details').find('input, textarea').prop('readonly', false);
-            $('#admin-password, #admin-password-confirm').removeClass('required');
-            $('#admin-notifications').prop('disabled', false);
-        });
-        
-        /**
-         * Event: Delete Admin Button "Click"
-         */
-        $('#delete-admin').click(function() {
-            var adminId = $('#admin-id').val();
-            
-            var messageBtns = {
-                'Delete': function() {
-                    BackendUsers.helper.delete(adminId);
-                    $('#message_box').dialog('close');
-                },
-                'Cancel': function() {
-                    $('#message_box').dialog('close');
-                }
-            };
-            
-            GeneralFunctions.displayMessageBox('Delete Admin', 'Are you sure that you want '
-                    + 'to delete this record? This action cannot be undone.', messageBtns);
-        });
-        
-        /**
-         * Event: Save Admin Button "Click"
-         */
-        $('#save-admin').click(function() {
-            var admin = {
-                'first_name': $('#admin-first-name').val(),
-                'last_name': $('#admin-last-name').val(),
-                'email': $('#admin-email').val(),
-                'mobile_number': $('#admin-mobile-number').val(),
-                'phone_number': $('#admin-phone-number').val(),
-                'address': $('#admin-address').val(),
-                'city': $('#admin-city').val(),
-                'state': $('#admin-state').val(),
-                'zip_code': $('#admin-zip-code').val(),
-                'notes': $('#admin-notes').val(),
-                'settings': {
-                    'username': $('#admin-username').val(),                    
-                    'notifications': $('#admin-notifications').hasClass('active')
-                }
-            };
-            
-            // Include password if changed.
-            if ($('#admin-password').val() !== '') {
-                admin.settings.password = $('#admin-password').val();
-            }
-            
-            // Include id if changed.
-            if ($('#admin-id').val() !== '') {
-                admin.id = $('#admin-id').val();
-            }
-            
-            if (!BackendUsers.helper.validate(admin)) return;
-            
-            BackendUsers.helper.save(admin);
-        });
-        
-        /**
-         * Event: Cancel Admin Button "Click"
-         * 
-         * Cancel add or edit of an admin record.
-         */
-        $('#cancel-admin').click(function() {
-            BackendUsers.helper.resetForm();
-            
-            var admin = { 'id': $('#admins .selected-row').attr('data-id') };
-            
-            $.each(BackendUsers.helper.filterResults, function(index, item) {
-                if (item.id === admin.id) {
-                    admin = item;
-                    return;
-                }
-            });
-            
-            BackendUsers.helper.display(admin);
-            
-            $('#edit-admin, #delete-admin').prop('disabled', false);
-        });
+        AdminsHelper.prototype.bindEventHandlers();
         
         // ------------------------------------------------------------------------
         
-        /**
-         * Event: Filter Providers Button "Click"
-         * 
-         * Filter the provider records with the given key string.
-         */
-        $('.filter-providers').click(function() {
-            var key = $('#providers .filter-key').val();
-            $('.selected-row').removeClass('selected-row');
-            BackendUsers.helper.resetForm();
-            BackendUsers.helper.filter(key);
-        });
-        
-        /**
-         * Event: Filter Provider Row "Click"
-         * 
-         * Display the selected provider data to the user.
-         */
-        $(document).on('click', '.provider-row', function() {
-            if ($('#providers .filter-providers').prop('disabled')) {
-                $('#providers .filter-results').css('color', '#AAA');
-                return; // exit because we are currently on edit mode
-            }
-            
-            var provider = { 'id': $(this).attr('data-id') };
-            $.each(BackendUsers.helper.filterResults, function(index, item) {
-                if (item.id === provider.id) {
-                    provider = item;
-                    return;
-                }
-            });
-            BackendUsers.helper.display(provider);
-            $('.selected-row').removeClass('selected-row');
-            $(this).addClass('selected-row');
-            $('#edit-provider, #delete-provider').prop('disabled', false);
-        });
-        
-        /**
-         * Event: Add New Provider Button "Click"
-         */
-        $('#add-provider').click(function() {
-            BackendUsers.helper.resetForm();
-            $('#providers .add-edit-delete-group').hide();
-            $('#providers .save-cancel-group').show();
-            $('#providers .details').find('input, textarea').prop('readonly', false);
-            $('#providers .filter-providers').prop('disabled', true);
-            $('#providers .filter-results').css('color', '#AAA');
-            $('#provider-password, #provider-password-confirm').addClass('required');
-            $('#provider-notifications').prop('disabled', false);
-            $('#provider-services input[type="checkbox"]').prop('disabled', false);
-            
-            $('#providers .add-break').prop('disabled', false);
-            $('.edit-break, .delete-break').prop('disabled', false);
-            $('#providers input[type="checkbox"]').prop('disabled', false);
-            
-            // Apply default working plan
-            $.each(GlobalVariables.workingPlan, function(index, workingDay) {
-                if (workingDay != null) {
-                    $('#' + index).prop('checked', true);
-                    $('#' + index + '-start').val(workingDay.start);
-                    $('#' + index + '-end').val(workingDay.end);
-
-                    // Add the day's breaks on the breaks table.
-                    $.each(workingDay.breaks, function(i, brk) {
-                        var tr = 
-                                '<tr>' + 
-                                    '<td class="break-day editable">' + GeneralFunctions.ucaseFirstLetter(index) + '</td>' +
-                                    '<td class="break-start editable">' + brk.start + '</td>' +
-                                    '<td class="break-end editable">' + brk.end + '</td>' +
-                                    '<td>' + 
-                                        '<button type="button" class="btn edit-break" title="Edit Break">' +
-                                            '<i class="icon-pencil"></i>' +
-                                        '</button>' +
-                                        '<button type="button" class="btn delete-break" title="Delete Break">' +
-                                            '<i class="icon-remove"></i>' +
-                                        '</button>' +
-                                        '<button type="button" class="btn save-break hidden" title="Save Break">' +
-                                            '<i class="icon-ok"></i>' +
-                                        '</button>' +
-                                        '<button type="button" class="btn cancel-break hidden" title="Cancel Break">' +
-                                            '<i class="icon-ban-circle"></i>' +
-                                        '</button>' +
-                                    '</td>' +
-                                '</tr>';
-                        $('#breaks').append(tr);
-                    });
-                } else {
-                    $('#' + index).prop('checked', false);
-                    $('#' + index + '-start').prop('disabled', true);
-                    $('#' + index + '-end').prop('disabled', true);
-                }
-            });
-            
-            // Make break cells editable.
-            BackendUsers.editableBreakDay($('#breaks .break-day'));
-            BackendUsers.editableBreakTime($('#breaks').find('.break-start, .break-end'));
-
-            // Set timepickers where needed.
-            $('.working-plan input').timepicker({
-                'timeFormat': 'HH:mm',
-                'onSelect': function(datetime, inst) {
-                    // Start time must be earlier than end time. 
-                    var start = Date.parse($(this).parent().parent().find('.work-start').val());
-                    var end = Date.parse($(this).parent().parent().find('.work-end').val());
-
-                    if (start > end) {
-                        $(this).parent().parent().find('.work-end').val(start.addHours(1).toString('HH:mm'));
-                    }
-                }
-            });
-        });
-        
-        /**
-         * Event: Day Checkbox "Click"
-         * 
-         * Enable or disable the time selection for each day.
-         */
-        $('.working-plan input[type="checkbox"]').click(function() {
-            var id = $(this).attr('id');
-            
-            if ($(this).prop('checked') == true) {
-                $('#' + id + '-start').prop('disabled', false).val('09:00');
-                $('#' + id + '-end').prop('disabled', false).val('18:00');
-            } else {
-                $('#' + id + '-start').prop('disabled', true).val('');
-                $('#' + id + '-end').prop('disabled', true).val('');
-            }
-        });
-        
-        /**
-         * Event: Add Break Button "Click"
-         * 
-         * A new row is added on the table and the user can enter the new break 
-         * data. After that he can either press the save or cancel button.
-         */
-        $('.add-break').click(function() {
-            var tr = 
-                    '<tr>' + 
-                        '<td class="break-day editable">Monday</td>' +
-                        '<td class="break-start editable">09:00</td>' +
-                        '<td class="break-end editable">10:00</td>' +
-                        '<td>' + 
-                            '<button type="button" class="btn edit-break" title="Edit Break">' +
-                                '<i class="icon-pencil"></i>' +
-                            '</button>' +
-                            '<button type="button" class="btn delete-break" title="Delete Break">' +
-                                '<i class="icon-remove"></i>' +
-                            '</button>' +
-                            '<button type="button" class="btn save-break hidden" title="Save Break">' +
-                                '<i class="icon-ok"></i>' +
-                            '</button>' +
-                            '<button type="button" class="btn cancel-break hidden" title="Cancel Break">' +
-                                '<i class="icon-ban-circle"></i>' +
-                            '</button>' +
-                        '</td>' +
-                    '</tr>';
-            $('#breaks').prepend(tr);
-            
-            // Bind editable and event handlers.
-            tr = $('#breaks tr').get()[1];
-            BackendUsers.editableBreakDay($(tr).find('.break-day'));
-            BackendUsers.editableBreakTime($(tr).find('.break-start, .break-end'));
-            $(tr).find('.edit-break').trigger('click');
-        });
-        
-        /**
-         * Event: Edit Break Button "Click"
-         * 
-         * Enables the row editing for the "Breaks" table rows.
-         */
-        $(document).on('click', '.edit-break', function() {
-            // Reset previous editable tds
-            var $previousEdt = $(this).closest('table').find('.editable').get();
-            $.each($previousEdt, function(index, edt) {
-               edt.reset();
-            });
-            
-            // Make all cells in current row editable.
-            $(this).parent().parent().children().trigger('edit');
-            $(this).parent().parent().find('.break-start input, .break-end input').timepicker();
-            $(this).parent().parent().find('.break-day select').focus();
-            
-            // Show save - cancel buttons.
-            $(this).closest('table').find('.edit-break, .delete-break').addClass('hidden');
-            $(this).parent().find('.save-break, .cancel-break').removeClass('hidden');
-            
-        });
-        
-        /**
-         * Event: Delete Break Button "Click"
-         * 
-         * Removes the current line from the "Breaks" table.
-         */
-        $(document).on('click', '.delete-break', function() {
-           $(this).parent().parent().remove();
-        });
-        
-        /**
-         * Event: Cancel Break Button "Click"
-         * 
-         * Bring the "#breaks" table back to its initial state.
-         */
-        $(document).on('click', '.cancel-break', function() {
-            BackendUsers.enableCancel = true;
-            $(this).parent().parent().find('.cancel-editable').trigger('click');
-            BackendUsers.enableCancel = false;
-            
-            $(this).closest('table').find('.edit-break, .delete-break').removeClass('hidden');
-            $(this).parent().find('.save-break, .cancel-break').addClass('hidden');
-        });
-        
-        /**
-         * Event: Save Break Button "Click"
-         * 
-         * Save the editable values and restore the table to its initial state.
-         */
-        $(document).on('click', '.save-break', function() {
-            // Break's start time must always be prior to break's end. 
-            var start = Date.parse($(this).parent().parent().find('.break-start input').val());
-            var end = Date.parse($(this).parent().parent().find('.break-end input').val());
-            if (start > end) {
-                $(this).parent().parent().find('.break-end  input').val(start.addHours(1).toString('HH:mm'));
-            }
-            
-            BackendUsers.enableSubmit = true;
-            $(this).parent().parent().find('.editable .submit-editable').trigger('click');
-            BackendUsers.enableSubmit = false;
-            
-            $(this).closest('table').find('.edit-break, .delete-break').removeClass('hidden');
-            $(this).parent().find('.save-break, .cancel-break').addClass('hidden');
-        });
-        
-        /**
-         * Event: Edit Provider Button "Click"
-         */
-        $('#edit-provider').click(function() {
-            $('#providers .add-edit-delete-group').hide();
-            $('#providers .save-cancel-group').show();
-            $('.filter-providers').prop('disabled', true);
-            $('#providers .filter-results').css('color', '#AAA');
-            $('#providers .details').find('input, textarea').prop('readonly', false);
-            $('#provider-password, #provider-password-confirm').removeClass('required');
-            $('#provider-notifications').prop('disabled', false);
-            $('#provider-services input[type="checkbox"]').prop('disabled', false);
-            
-            $('#providers .add-break').prop('disabled', false);
-            $('.edit-break, .delete-break').prop('disabled', false);
-            $('#providers input[type="checkbox"]').prop('disabled', false);
-        });
-        
-        /**
-         * Event: Delete Provider Button "Click"
-         */
-        $('#delete-provider').click(function() {
-            var providerId = $('#provider-id').val();
-            
-            var messageBtns = {
-                'Delete': function() {
-                    BackendUsers.helper.delete(providerId);
-                    $('#message_box').dialog('close');
-                },
-                'Cancel': function() {
-                    $('#message_box').dialog('close');
-                }
-            };
-            
-            GeneralFunctions.displayMessageBox('Delete Provider', 'Are you sure that you want '
-                    + 'to delete this record? This action cannot be undone.', messageBtns);
-        });
-        
-        /**
-         * Event: Save Provider Button "Click"
-         */
-        $('#save-provider').click(function() {
-            var provider = {
-                'first_name': $('#provider-first-name').val(),
-                'last_name': $('#provider-last-name').val(),
-                'email': $('#provider-email').val(),
-                'mobile_number': $('#provider-mobile-number').val(),
-                'phone_number': $('#provider-phone-number').val(),
-                'address': $('#provider-address').val(),
-                'city': $('#provider-city').val(),
-                'state': $('#provider-state').val(),
-                'zip_code': $('#provider-zip-code').val(),
-                'notes': $('#provider-notes').val(),
-                'settings': {
-                    'username': $('#provider-username').val(),  
-                    'working_plan': BackendUsers.helper.getWorkingPlan(),
-                    'notifications': $('#provider-notifications').hasClass('active')
-                }
-            };
-            
-            // Include provider services.
-            provider.services = [];
-            $('#provider-services input[type="checkbox"]').each(function() {
-                if ($(this).prop('checked')) {
-                    provider.services.push($(this).attr('data-id'));
-                }
-            });
-            
-            // Include password if changed.
-            if ($('#provider-password').val() !== '') {
-                provider.settings.password = $('#provider-password').val();
-            }
-            
-            // Include id if changed.
-            if ($('#provider-id').val() !== '') {
-                provider.id = $('#provider-id').val();
-            }
-            
-            if (!BackendUsers.helper.validate(provider)) return;
-            
-            BackendUsers.helper.save(provider);
-        });
-        
-        /**
-         * Event: Cancel Provider Button "Click"
-         * 
-         * Cancel add or edit of an provider record.
-         */
-        $('#cancel-provider').click(function() {
-            BackendUsers.helper.resetForm();
-            
-            var provider = { 'id': $('#providers .selected-row').attr('data-id') };
-            
-            $.each(BackendUsers.helper.filterResults, function(index, item) {
-                if (item.id === provider.id) {
-                    provider = item;
-                    return;
-                }
-            });
-            
-            BackendUsers.helper.display(provider);
-            
-            $('#edit-provider, #delete-provider').prop('disabled', false);
-        });
-        
-        /**
-         * Event: Display Provider Details "Click"
-         */
-        $('#providers .display-details').click(function() {
-            $('#providers .switch-view .current').removeClass('current');
-            $(this).addClass('current');
-            $('.working-plan-view').hide('fade', function() {
-                $('.details-view').show('fade');
-            });
-            
-        });
-        
-        /**
-         * Event: Display Provider Working Plan "Click"
-         */
-        $('#providers .display-working-plan').click(function() {
-            $('#providers .switch-view .current').removeClass('current');
-            $(this).addClass('current');
-            $('.details-view').hide('fade', function() {
-                $('.working-plan-view').show('fade');
-            });
-        });
+        ProvidersHelper.prototype.bindEventHandlers();
         
         // ------------------------------------------------------------------------
         
-        /**
-         * Event: Filter Secretaries Button "Click"
-         * 
-         * Filter the secretary records with the given key string.
-         */
-        $('.filter-secretaries').click(function() {
-            var key = $('#secretaries .filter-key').val();
-            $('.selected-row').removeClass('selected-row');
-            BackendUsers.helper.resetForm();
-            BackendUsers.helper.filter(key);
-        });
-        
-        /**
-         * Event: Filter Secretary Row "Click"
-         * 
-         * Display the selected secretary data to the user.
-         */
-        $(document).on('click', '.secretary-row', function() {
-            if ($('#secretaries .filter-secretaries').prop('disabled')) {
-                $('#secretaries .filter-results').css('color', '#AAA');
-                return; // exit because we are currently on edit mode
-            }
-            
-            var secretary = { 'id': $(this).attr('data-id') };
-            $.each(BackendUsers.helper.filterResults, function(index, item) {
-                if (item.id === secretary.id) {
-                    secretary = item;
-                    return;
-                }
-            });
-            BackendUsers.helper.display(secretary);
-            $('.selected-row').removeClass('selected-row');
-            $(this).addClass('selected-row');
-            $('#edit-secretary, #delete-secretary').prop('disabled', false);
-        });
-        
-        /**
-         * Event: Add New Secretary Button "Click"
-         */
-        $('#add-secretary').click(function() {
-            BackendUsers.helper.resetForm();
-            $('#secretaries .add-edit-delete-group').hide();
-            $('#secretaries .save-cancel-group').show();
-            $('#secretaries .details').find('input, textarea').prop('readonly', false);
-            $('#secretaries .filter-secretaries').prop('disabled', true);
-            $('#secretaries .filter-results').css('color', '#AAA');
-            $('#secretary-password, #secretary-password-confirm').addClass('required');
-            $('#secretary-notifications').prop('disabled', false);
-            $('#secretary-providers input[type="checkbox"]').prop('disabled', false);
-        });
-        
-        /**
-         * Event: Edit Secretary Button "Click"
-         */
-        $('#edit-secretary').click(function() {
-            $('#secretaries .add-edit-delete-group').hide();
-            $('#secretaries .save-cancel-group').show();
-            $('.filter-secretaries').prop('disabled', true);
-            $('#secretaries .filter-results').css('color', '#AAA');
-            $('#secretaries .details').find('input, textarea').prop('readonly', false);
-            $('#secretary-password, #secretary-password-confirm').removeClass('required');
-            $('#secretary-notifications').prop('disabled', false);
-            $('#secretary-providers input[type="checkbox"]').prop('disabled', false);
-        });
-        
-        /**
-         * Event: Delete Secretary Button "Click"
-         */
-        $('#delete-secretary').click(function() {
-            var providerId = $('#secretary-id').val();
-            
-            var messageBtns = {
-                'Delete': function() {
-                    BackendUsers.helper.delete(providerId);
-                    $('#message_box').dialog('close');
-                },
-                'Cancel': function() {
-                    $('#message_box').dialog('close');
-                }
-            };
-            
-            GeneralFunctions.displayMessageBox('Delete Secretary', 'Are you sure that you want '
-                    + 'to delete this record? This action cannot be undone.', messageBtns);
-        });
-        
-        /**
-         * Event: Save Secretary Button "Click"
-         */
-        $('#save-secretary').click(function() {
-            var secretary = {
-                'first_name': $('#secretary-first-name').val(),
-                'last_name': $('#secretary-last-name').val(),
-                'email': $('#secretary-email').val(),
-                'mobile_number': $('#secretary-mobile-number').val(),
-                'phone_number': $('#secretary-phone-number').val(),
-                'address': $('#secretary-address').val(),
-                'city': $('#secretary-city').val(),
-                'state': $('#secretary-state').val(),
-                'zip_code': $('#secretary-zip-code').val(),
-                'notes': $('#secretary-notes').val(),
-                'settings': {
-                    'username': $('#secretary-username').val(),                    
-                    'notifications': $('#secretary-notifications').hasClass('active')
-                }
-            };
-            
-            // Include secretary services.
-            secretary.providers = [];
-            $('#secretary-providers input[type="checkbox"]').each(function() {
-                if ($(this).prop('checked')) {
-                    secretary.providers.push($(this).attr('data-id'));
-                }
-            });
-            
-            // Include password if changed.
-            if ($('#secretary-password').val() !== '') {
-                secretary.settings.password = $('#secretary-password').val();
-            }
-            
-            // Include id if changed.
-            if ($('#secretary-id').val() !== '') {
-                secretary.id = $('#secretary-id').val();
-            }
-            
-            if (!BackendUsers.helper.validate(secretary)) return;
-            
-            BackendUsers.helper.save(secretary);
-        });
-        
-        /**
-         * Event: Cancel Secretary Button "Click"
-         * 
-         * Cancel add or edit of an secretary record.
-         */
-        $('#cancel-secretary').click(function() {
-            BackendUsers.helper.resetForm();
-        });
-    },
-            
-    /**
-     * Initialize the editable functionality to the break day table cells.
-     * 
-     * @param {object} $selector The cells to be initialized.
-     */
-    editableBreakDay: function($selector) {
-        $selector.editable(function(value, settings) {
-            return value;
-        }, {
-            'type': 'select',
-            'data': '{ "Monday": "Monday", "Tuesday": "Tuesday", "Wednesday": "Wednesday", '
-                    + '"Thursday": "Thursday", "Friday": "Friday", "Saturday": "Saturday", '
-                    + '"Sunday": "Sunday", "selected": "Monday"}',
-            'event': 'edit',
-            'height': '30px',
-            'submit': '<button type="button" class="hidden submit-editable">Submit</button>',
-            'cancel': '<button type="button" class="hidden cancel-editable">Cancel</button>',
-            'onblur': 'ignore',
-            'onreset': function(settings, td) {
-                if (!BackendUsers.enableCancel) return false; // disable ESC button
-            },
-            'onsubmit': function(settings, td) {
-                if (!BackendUsers.enableSubmit) return false; // disable Enter button
-            }
-        });
-    },
-    
-    /**
-     * Initialize the editable functionality to the break time table cells.
-     * 
-     * @param {object} $selector The cells to be initialized.
-     */        
-    editableBreakTime: function($selector) {
-        $selector.editable(function(value, settings) {
-            // Do not return the value because the user needs to press the "Save" button.
-            return value;
-        }, {
-            'event': 'edit',
-            'height': '25px',
-            'submit': '<button type="button" class="hidden submit-editable">Submit</button>',
-            'cancel': '<button type="button" class="hidden cancel-editable">Cancel</button>',
-            'onblur': 'ignore',
-            'onreset': function(settings, td) {
-                if (!BackendUsers.enableCancel) return false; // disable ESC button
-            },
-            'onsubmit': function(settings, td) {
-                if (!BackendUsers.enableSubmit) return false; // disable Enter button
-            }
-        });
+        SecretariesHelper.prototype.bindEventHandlers();
     }
-};
-
-/**
- * This class contains the methods that will be used by the "Admins" tab of the page.
- * 
- * @class AdminsHelper
- */
-var AdminsHelper = function() {
-    this.filterResults = {}; // Store the results for later use.
-};
-
-/**
- * Save admin record to database.
- * 
- * @param {object} admin Contains the admin record data. If an 'id' value is provided
- * then the update operation is going to be executed.
- */
-AdminsHelper.prototype.save = function(admin) {
-    ////////////////////////////////////////////
-    console.log('Admin data to save:', admin);
-    ////////////////////////////////////////////
-    
-    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_save_admin';
-    var postData = { 'admin': JSON.stringify(admin) };
-    
-    $.post(postUrl, postData, function(response) {
-        ////////////////////////////////////////////////
-        console.log('Save Admin Response:', response);
-        ////////////////////////////////////////////////
-        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
-        Backend.displayNotification('Admin saved successfully!');
-        BackendUsers.helper.resetForm(true);
-        // When adding a new record the "admin.id" will be undefined. In this situation
-        // no record will be selected because we do not yet know the id of the new record,
-        // but no error will occur either.
-        BackendUsers.helper.filter($('#admins .filter-key').val(), admin.id); 
-    }, 'json');
-};
-
-/**
- * Delete an admin record from database.
- * 
- * @param {int} id Record id to be deleted. 
- */
-AdminsHelper.prototype.delete = function(id) {
-    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_delete_admin';
-    var postData = { 'admin_id': id };
-    
-    $.post(postUrl, postData, function(response) {
-        //////////////////////////////////////////////////
-        console.log('Delete admin response:', response);
-        //////////////////////////////////////////////////
-        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
-        Backend.displayNotification('Admin deleted successfully!');
-        BackendUsers.helper.resetForm();
-        BackendUsers.helper.filter($('#admins .filter-key').val());
-    });
-};
-
-/**
- * Validates an admin record.
- * 
- * @param {object} admin Contains the admin data to be validated.
- * @returns {bool} Returns the validation result.
- */
-AdminsHelper.prototype.validate = function(admin) {
-    $('#admins .required').css('border', '');
-    $('#admin-password, #admin-password-confirm').css('border', '');
-    
-    try {
-        // Validate required fields.
-        var missingRequired = false;
-        $('#admins .required').each(function() {
-            if ($(this).val() == '' || $(this).val() == undefined) {
-                $(this).css('border', '2px solid red');
-                missingRequired = true;
-            }
-        });
-        if (missingRequired) {
-            throw 'Fields with * are  required.';
-        }
-        
-        // Validate passwords.
-        if ($('#admin-password').val() != $('#admin-password-confirm').val()) {
-            $('#admin-password, #admin-password-confirm').css('border', '2px solid red');
-            throw 'Passwords mismatch!';
-        }
-        
-        if ($('#admin-password').val().length < BackendUsers.MIN_PASSWORD_LENGTH
-                && $('#admin-password').val() != '') {
-            $('#admin-password, #admin-password-confirm').css('border', '2px solid red');
-            throw 'Password must be at least ' + BackendUsers.MIN_PASSWORD_LENGTH 
-                    + ' characters long.';
-        }
-        
-        // Validate user email.
-        if (!GeneralFunctions.validateEmail($('#admin-email').val())) {
-            $('#admin-email').css('border', '2px solid red');
-            throw 'Invalid email address!';
-        }
-        
-        return true;
-    } catch(exc) {
-        $('#admins .form-message').text(exc);
-        $('#admins .form-message').show();
-        return false;
-    }
-};
-
-/**
- * Resets the admin tab form back to its initial state. 
- * 
- * @param {bool} keepRecordData (OPTIONAL = false) If false then the current record data 
- * will remain on the form.
- */
-AdminsHelper.prototype.resetForm = function(keepRecordData) {
-    if (keepRecordData == undefined) keepRecordData = false;
-    
-    $('#admins .add-edit-delete-group').show();
-    $('#admins .save-cancel-group').hide();
-    $('#admins .details').find('input, textarea').prop('readonly', true);
-    $('.filter-admins').prop('disabled', false);
-    $('#admins .filter-results').css('color', '');
-    $('#admins .form-message').hide();    
-    $('#admin-notifications').prop('disabled', true);
-    $('#admins .required').css('border', '');
-    $('#admin-password, #admin-password-confirm').css('border', '');
-    
-    if (!keepRecordData) {
-        $('#admins .details').find('input, textarea').val('');
-        $('#admin-notifications').removeClass('active');
-        $('#edit-admin, #delete-admin').prop('disabled', true);
-    }
-};
-
-/**
- * Display a admin record into the admin form.
- * 
- * @param {object} admin Contains the admin record data.
- */
-AdminsHelper.prototype.display = function(admin) {
-    $('#admin-id').val(admin.id);
-    $('#admin-first-name').val(admin.first_name);
-    $('#admin-last-name').val(admin.last_name);
-    $('#admin-email').val(admin.email);
-    $('#admin-mobile-number').val(admin.mobile_number);
-    $('#admin-phone-number').val(admin.phone_number);
-    $('#admin-address').val(admin.address);
-    $('#admin-city').val(admin.city);
-    $('#admin-state').val(admin.state);
-    $('#admin-zip-code').val(admin.zip_code);
-    $('#admin-notes').val(admin.notes);
-    
-    $('#admin-username').val(admin.settings.username);
-    if (admin.settings.notifications == true) {
-        $('#admin-notifications').addClass('active');
-    } else {
-        $('#admin-notifications').removeClass('active');
-    }
-};
-
-/**
- * Filters admin records depending a string key.
- * 
- * @param {string} key This is used to filter the admin records of the database.
- */
-AdminsHelper.prototype.filter = function(key, selectRecordId) {
-    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_filter_admins';
-    var postData = { 'key': key };
-    
-    $.post(postUrl, postData, function(response) {
-        ///////////////////////////////////////////////////
-        console.log('Filter admins response:', response);
-        ///////////////////////////////////////////////////
-        
-        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
-        
-        BackendUsers.helper.filterResults = response;
-        
-        $('#admins .filter-results').html('');
-        $.each(response, function(index, admin) {
-            var html = AdminsHelper.prototype.getFilterHtml(admin);
-            $('#admins .filter-results').append(html);
-        });
-        
-        if (selectRecordId != undefined) {
-            $('.admin-row').each(function() {
-                if ($(this).attr('data-id') == selectRecordId) {
-                    $(this).addClass('selected-row');
-                    return false;
-                }
-            });
-        }
-    }, 'json');
-};
-
-/**
- * Get an admin row html code that is going to be displayed on the filter results list.
- * 
- * @param {object} admin Contains the admin record data.
- * @returns {string} The html code that represents the record on the filter results list.
- */
-AdminsHelper.prototype.getFilterHtml = function(admin) {
-    var html =
-            '<div class="admin-row" data-id="' + admin.id + '">' + 
-                '<strong>' + admin.first_name + ' ' + admin.last_name + '</strong><br>' +
-                admin.email + ', ' + admin.mobile_number + ', ' + admin.phone_number + '<br>' + 
-            '</div>';
-
-    return html;
-};
-
-/**
- * This class contains the methods that will be used by the "Providers" tab of the page.
- * 
- * @class ProvidersHelper
- */
-var ProvidersHelper = function() {
-    this.filterResults = {}; // Store the results for later use.
-};
-
-/**
- * Save provider record to database.
- * 
- * @param {object} provider Contains the admin record data. If an 'id' value is provided
- * then the update operation is going to be executed.
- */
-ProvidersHelper.prototype.save = function(provider) {
-    //////////////////////////////////////////////////
-    console.log('Provider data to save:', provider);
-    //////////////////////////////////////////////////
-    
-    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_save_provider';
-    var postData = { 'provider': JSON.stringify(provider) };
-    
-    $.post(postUrl, postData, function(response) {
-        ///////////////////////////////////////////////////
-        console.log('Save Provider Response:', response);
-        ///////////////////////////////////////////////////
-        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
-        Backend.displayNotification('Provider saved successfully!');
-        BackendUsers.helper.resetForm(true);
-        // If "id" is not defined then no record will be selected (applies when adding 
-        // a new provider record).
-        BackendUsers.helper.filter($('#providers .filter-key').val(), provider.id); 
-    }, 'json');
-};
-
-/**
- * Delete a provider record from database.
- * 
- * @param {int} id Record id to be deleted. 
- */
-ProvidersHelper.prototype.delete = function(id) {
-    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_delete_provider';
-    var postData = { 'provider_id': id };
-    
-    $.post(postUrl, postData, function(response) {
-        /////////////////////////////////////////////////////
-        console.log('Delete provider response:', response);
-        /////////////////////////////////////////////////////
-        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
-        Backend.displayNotification('Provider deleted successfully!');
-        BackendUsers.helper.resetForm();
-        BackendUsers.helper.filter($('#providers .filter-key').val());
-    });
-};
-
-/**
- * Validates a provider record.
- * 
- * @param {object} provider Contains the admin data to be validated.
- * @returns {bool} Returns the validation result.
- */
-ProvidersHelper.prototype.validate = function(provider) {
-    $('#providers .required').css('border', '');
-    $('#provider-password, #provider-password-confirm').css('border', '');
-    
-    try {
-        // Validate required fields.
-        var missingRequired = false;
-        $('#providers .required').each(function() {
-            if ($(this).val() == '' || $(this).val() == undefined) {
-                $(this).css('border', '2px solid red');
-                missingRequired = true;
-            }
-        });
-        if (missingRequired) {
-            throw 'Fields with * are  required.';
-        }
-        
-        // Validate passwords.
-        if ($('#provider-password').val() != $('#provider-password-confirm').val()) {
-            $('#provider-password, #provider-password-confirm').css('border', '2px solid red');
-            throw 'Passwords mismatch!';
-        }
-        
-        if ($('#provider-password').val().length < BackendUsers.MIN_PASSWORD_LENGTH
-                && $('#provider-password').val() != '') {
-            $('#provider-password, #provider-password-confirm').css('border', '2px solid red');
-            throw 'Password must be at least ' + BackendUsers.MIN_PASSWORD_LENGTH 
-                    + ' characters long.';
-        }
-        
-        // Validate user email.
-        if (!GeneralFunctions.validateEmail($('#provider-email').val())) {
-            $('#provider-email').css('border', '2px solid red');
-            throw 'Invalid email address!';
-        }
-        
-        return true;
-    } catch(exc) {
-        $('#providers .form-message').text(exc);
-        $('#providers .form-message').show();
-        return false;
-    }
-};
-
-/**
- * Resets the admin tab form back to its initial state. 
- * 
- * @param {bool} keepRecordData (OPTIONAL = false) If true then the current record data will
- * remain on the form.
- */
-ProvidersHelper.prototype.resetForm = function(keepRecordData) {
-    if (keepRecordData == undefined) keepRecordData = false;
-    
-    $('#providers .add-edit-delete-group').show();
-    $('#providers .save-cancel-group').hide();
-    $('#providers .details').find('input, textarea').prop('readonly', true);
-    $('.filter-providers').prop('disabled', false);
-    $('#providers .filter-results').css('color', '');
-    $('#providers .form-message').hide();    
-    $('#provider-notifications').removeClass('active');
-    $('#provider-notifications').prop('disabled', true);
-    $('#provider-services input[type="checkbox"]').prop('disabled', true);
-    $('#providers .required').css('border', '');
-    $('#provider-password, #provider-password-confirm').css('border', '');
-    $('#providers .add-break').prop('disabled', true);
-    $('#providers input[type="checkbox"]').prop('disabled', true);
-    $('#providers .working-plan input[type="text"]').timepicker('destroy');
-    $('#breaks').find('.edit-break, .delete-break').prop('disabled', true);
-    
-    if (!keepRecordData) {
-        $('#edit-provider, #delete-provider').prop('disabled', true);
-        $('#providers .details').find('input, textarea').val('');
-        $('#providers input[type="checkbox"]').prop('checked', false);
-        $('#provider-services input[type="checkbox"]').prop('checked', false);
-        $('#providers #breaks tbody').empty();
-    }
-};
-
-/**
- * Display a provider record into the admin form.
- * 
- * @param {object} provider Contains the provider record data.
- */
-ProvidersHelper.prototype.display = function(provider) {
-    $('#provider-id').val(provider.id);
-    $('#provider-first-name').val(provider.first_name);
-    $('#provider-last-name').val(provider.last_name);
-    $('#provider-email').val(provider.email);
-    $('#provider-mobile-number').val(provider.mobile_number);
-    $('#provider-phone-number').val(provider.phone_number);
-    $('#provider-address').val(provider.address);
-    $('#provider-city').val(provider.city);
-    $('#provider-state').val(provider.state);
-    $('#provider-zip-code').val(provider.zip_code);
-    $('#provider-notes').val(provider.notes);
-    
-    $('#provider-username').val(provider.settings.username);
-    if (provider.settings.notifications == true) {
-        $('#provider-notifications').addClass('active');
-    } else {
-        $('#provider-notifications').removeClass('active');
-    }
-    
-    $('#provider-services input[type="checkbox"]').prop('checked', false);
-    $.each(provider.services, function(index, serviceId) {
-        $('#provider-services input[type="checkbox"]').each(function() {
-            if ($(this).attr('data-id') == serviceId) {
-                $(this).prop('checked', true);
-            }
-        });
-    });
-    
-    // Display working plan
-    $('#providers #breaks tbody').empty();
-    var workingPlan = $.parseJSON(provider.settings.working_plan);
-    $.each(workingPlan, function(index, workingDay) {
-        if (workingDay != null) {
-            $('#' + index).prop('checked', true);
-            $('#' + index + '-start').val(workingDay.start);
-            $('#' + index + '-end').val(workingDay.end);
-
-            // Add the day's breaks on the breaks table.
-            $.each(workingDay.breaks, function(i, brk) {
-                var tr = 
-                        '<tr>' + 
-                            '<td class="break-day editable">' + GeneralFunctions.ucaseFirstLetter(index) + '</td>' +
-                            '<td class="break-start editable">' + brk.start + '</td>' +
-                            '<td class="break-end editable">' + brk.end + '</td>' +
-                            '<td>' + 
-                                '<button type="button" class="btn edit-break" title="Edit Break">' +
-                                    '<i class="icon-pencil"></i>' +
-                                '</button>' +
-                                '<button type="button" class="btn delete-break" title="Delete Break">' +
-                                    '<i class="icon-remove"></i>' +
-                                '</button>' +
-                                '<button type="button" class="btn save-break hidden" title="Save Break">' +
-                                    '<i class="icon-ok"></i>' +
-                                '</button>' +
-                                '<button type="button" class="btn cancel-break hidden" title="Cancel Break">' +
-                                    '<i class="icon-ban-circle"></i>' +
-                                '</button>' +
-                            '</td>' +
-                        '</tr>';
-                $('#breaks').append(tr);
-            });
-        } else {
-            $('#' + index).prop('checked', false);
-            $('#' + index + '-start').prop('disabled', true);
-            $('#' + index + '-end').prop('disabled', true);
-        }
-    });
-    
-    $('.edit-break, .delete-break').prop('disabled', true);
-
-    // Make break cells editable.
-    BackendUsers.editableBreakDay($('#breaks .break-day'));
-    BackendUsers.editableBreakTime($('#breaks').find('.break-start, .break-end'));
-
-    // Set timepickers where needed.
-    $('.working-plan input').timepicker({
-        'timeFormat': 'HH:mm',
-        'onSelect': function(datetime, inst) {
-            // Start time must be earlier than end time. 
-            var start = Date.parse($(this).parent().parent().find('.work-start').val());
-            var end = Date.parse($(this).parent().parent().find('.work-end').val());
-
-            if (start > end) {
-                $(this).parent().parent().find('.work-end').val(start.addHours(1).toString('HH:mm'));
-            }
-        }
-    });
-};
-
-/**
- * Filters provider records depending a string key.
- * 
- * @param {string} key This is used to filter the provider records of the database.
- * @param {numeric} selectRecordId (OPTIONAL) If set, when the function is complete
- * a result row can be set as selected. 
- */
-ProvidersHelper.prototype.filter = function(key, selectRecordId) {
-    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_filter_providers';
-    var postData = { 'key': key };
-    
-    $.post(postUrl, postData, function(response) {
-        //////////////////////////////////////////////////////
-        console.log('Filter providers response:', response);
-        //////////////////////////////////////////////////////
-        
-        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
-        
-        BackendUsers.helper.filterResults = response;
-        
-        $('#providers .filter-results').html('');
-        $.each(response, function(index, provider) {
-            var html = ProvidersHelper.prototype.getFilterHtml(provider);
-            $('#providers .filter-results').append(html);
-        });
-        
-        if (selectRecordId != undefined) {
-            $('.provider-row').each(function() {
-                if ($(this).attr('data-id') == selectRecordId) {
-                    $(this).addClass('selected-row');
-                    return false;
-                }
-            });
-        }
-    }, 'json');
-};
-
-/**
- * Get an provider row html code that is going to be displayed on the filter results list.
- * 
- * @param {object} provider Contains the provider record data.
- * @returns {string} The html code that represents the record on the filter results list.
- */
-ProvidersHelper.prototype.getFilterHtml = function(provider) {
-    var html =
-            '<div class="provider-row" data-id="' + provider.id + '">' + 
-                '<strong>' + provider.first_name + ' ' + provider.last_name + '</strong><br>' +
-                provider.email + ', ' + provider.mobile_number + ', ' + provider.phone_number + '<br>' + 
-            '</div>';
-
-    return html;
-};
-
-/**
- * Get the current working plan.
- * 
- * @return {string} Returns the working plan (already stringified).
- */
-ProvidersHelper.prototype.getWorkingPlan = function() {
-    var workingPlan = {};
-    $('.working-plan input[type="checkbox"').each(function() {
-        var id = $(this).attr('id');
-        if ($(this).prop('checked') == true) {
-            workingPlan[id] = {}
-            workingPlan[id].start = $('#' + id + '-start').val();
-            workingPlan[id].end = $('#' + id + '-end').val();
-            workingPlan[id].breaks = [];
-            
-            $('#breaks tr').each(function(index, tr) {
-                var day = $(tr).find('.break-day').text().toLowerCase();
-                if (day == id) {
-                    var start = $(tr).find('.break-start').text();
-                    var end = $(tr).find('.break-end').text();
-                    
-                    workingPlan[id].breaks.push({
-                        'start': start,
-                        'end': end
-                    });
-                    
-                }
-            });
-            
-        } else {
-            workingPlan[id] = null;
-        }
-    });
-    
-    return JSON.stringify(workingPlan);
-};
-
-/**
- * This class contains the methods that will be used by the "Secretaries" tab of the page.
- * 
- * @class SecretariesHelper
- */
-var SecretariesHelper = function() {
-    this.filterResults = {}; // Store the results for later use.
-};
-
-/**
- * Save secretary record to database.
- * 
- * @param {object} secretary Contains the admin record data. If an 'id' value is provided
- * then the update operation is going to be executed.
- */
-SecretariesHelper.prototype.save = function(secretary) {
-    ////////////////////////////////////////////////////
-    console.log('Secretary data to save:', secretary);
-    ////////////////////////////////////////////////////
-    
-    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_save_secretary';
-    var postData = { 'secretary': JSON.stringify(secretary) };
-    
-    $.post(postUrl, postData, function(response) {
-        ////////////////////////////////////////////////////
-        console.log('Save Secretary Response:', response);
-        ////////////////////////////////////////////////////
-        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
-        Backend.displayNotification('Secretary saved successfully!');
-        BackendUsers.helper.resetForm();
-        BackendUsers.helper.filter($('#secretaries .filter-key').val());
-    }, 'json');
-};
-
-/**
- * Delete a secretary record from database.
- * 
- * @param {int} id Record id to be deleted. 
- */
-SecretariesHelper.prototype.delete = function(id) {
-    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_delete_secretary';
-    var postData = { 'secretary_id': id };
-    
-    $.post(postUrl, postData, function(response) {
-        //////////////////////////////////////////////////////
-        console.log('Delete secretary response:', response);
-        //////////////////////////////////////////////////////
-        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
-        Backend.displayNotification('Secretary deleted successfully!');
-        BackendUsers.helper.resetForm();
-        BackendUsers.helper.filter($('#secretaries .filter-key').val());
-    });
-};
-
-/**
- * Validates a secretary record.
- * 
- * @param {object} secretary Contains the admin data to be validated.
- * @returns {bool} Returns the validation result.
- */
-SecretariesHelper.prototype.validate = function(secretary) {
-    $('#secretaries .required').css('border', '');
-    $('#secretary-password, #secretary-password-confirm').css('border', '');
-    
-    try {
-        // Validate required fields.
-        var missingRequired = false;
-        $('#secretaries .required').each(function() {
-            if ($(this).val() == '' || $(this).val() == undefined) {
-                $(this).css('border', '2px solid red');
-                missingRequired = true;
-            }
-        });
-        if (missingRequired) {
-            throw 'Fields with * are  required.';
-        }
-        
-        // Validate passwords.
-        if ($('#secretary-password').val() != $('#secretary-password-confirm').val()) {
-            $('#secretary-password, #secretary-password-confirm').css('border', '2px solid red');
-            throw 'Passwords mismatch!';
-        }
-        
-        if ($('#secretary-password').val().length < BackendUsers.MIN_PASSWORD_LENGTH
-                && $('#secretary-password').val() != '') {
-            $('#secretary-password, #secretary-password-confirm').css('border', '2px solid red');
-            throw 'Password must be at least ' + BackendUsers.MIN_PASSWORD_LENGTH 
-                    + ' characters long.';
-        }
-        
-        // Validate user email.
-        if (!GeneralFunctions.validateEmail($('#secretary-email').val())) {
-            $('#secretary-email').css('border', '2px solid red');
-            throw 'Invalid email address!';
-        }
-        
-        return true;
-    } catch(exc) {
-        $('#secretaries .form-message').text(exc);
-        $('#secretaries .form-message').show();
-        return false;
-    }
-};
-
-/**
- * Resets the admin tab form back to its initial state. 
- */
-SecretariesHelper.prototype.resetForm = function() {
-    $('#secretaries .details').find('input, textarea').val('');
-    $('#secretaries .add-edit-delete-group').show();
-    $('#secretaries .save-cancel-group').hide();
-    $('#edit-secretary, #delete-secretary').prop('disabled', true);
-    $('#secretaries .details').find('input, textarea').prop('readonly', true);
-    $('.filter-secretaries').prop('disabled', false);
-    $('#secretaries .filter-results').css('color', '');
-    $('#secretaries .form-message').hide();    
-    $('#secretary-notifications').removeClass('active');
-    $('#secretary-notifications').prop('disabled', true);
-    $('#secretary-providers input[type="checkbox"]').prop('checked', false);
-    $('#secretary-providers input[type="checkbox"]').prop('disabled', true);
-    $('#secretaries .required').css('border', '');
-    $('#secretary-password, #secretary-password-confirm').css('border', '');
-};
-
-/**
- * Display a secretary record into the admin form.
- * 
- * @param {object} secretary Contains the secretary record data.
- */
-SecretariesHelper.prototype.display = function(secretary) {
-    $('#secretary-id').val(secretary.id);
-    $('#secretary-first-name').val(secretary.first_name);
-    $('#secretary-last-name').val(secretary.last_name);
-    $('#secretary-email').val(secretary.email);
-    $('#secretary-mobile-number').val(secretary.mobile_number);
-    $('#secretary-phone-number').val(secretary.phone_number);
-    $('#secretary-address').val(secretary.address);
-    $('#secretary-city').val(secretary.city);
-    $('#secretary-state').val(secretary.state);
-    $('#secretary-zip-code').val(secretary.zip_code);
-    $('#secretary-notes').val(secretary.notes);
-    
-    $('#secretary-username').val(secretary.settings.username);
-    if (secretary.settings.notifications == true) {
-        $('#secretary-notifications').addClass('active');
-    } else {
-        $('#secretary-notifications').removeClass('active');
-    }
-    
-    $('#secretary-providers input[type="checkbox"]').prop('checked', false);
-    $.each(secretary.providers, function(index, providerId) {
-        $('#secretary-providers input[type="checkbox"]').each(function() {
-            if ($(this).attr('data-id') == providerId) {
-                $(this).prop('checked', true);
-            }
-        });
-    });
-};
-
-/**
- * Filters secretary records depending a string key.
- * 
- * @param {string} key This is used to filter the secretary records of the database.
- * @param {numeric} selectRecordId (OPTIONAL) If provided then the given id will be 
- * selected in the filter results (only selected, not displayed).
- */
-SecretariesHelper.prototype.filter = function(key, selectRecordId) {
-    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_filter_secretaries';
-    var postData = { 'key': key };
-    
-    $.post(postUrl, postData, function(response) {
-        ////////////////////////////////////////////////////////
-        console.log('Filter secretaries response:', response);
-        ////////////////////////////////////////////////////////
-        
-        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
-        
-        BackendUsers.helper.filterResults = response;
-        
-        $('#secretaries .filter-results').html('');
-        $.each(response, function(index, secretary) {
-            var html = SecretariesHelper.prototype.getFilterHtml(secretary);
-            $('#secretaries .filter-results').append(html);
-        });
-        
-        if (selectRecordId != undefined) {
-            $('.secretary-row').each(function() {
-                if ($(this).attr('data-id') == selectRecordId) {
-                    $(this).addClass('selected-row');
-                    return false;
-                }
-            });
-        }
-    }, 'json');
-};
-
-/**
- * Get an secretary row html code that is going to be displayed on the filter results list.
- * 
- * @param {object} secretary Contains the secretary record data.
- * @returns {string} The html code that represents the record on the filter results list.
- */
-SecretariesHelper.prototype.getFilterHtml = function(secretary) {
-    var html =
-            '<div class="secretary-row" data-id="' + secretary.id + '">' + 
-                '<strong>' + secretary.first_name + ' ' + secretary.last_name + '</strong><br>' +
-                secretary.email + ', ' + secretary.mobile_number + ', ' + secretary.phone_number + '<br>' + 
-            '</div>';
-
-    return html;
-};
+};
\ No newline at end of file
diff --git a/src/assets/js/backend_users_admins.js b/src/assets/js/backend_users_admins.js
new file mode 100644
index 00000000..78422ee8
--- /dev/null
+++ b/src/assets/js/backend_users_admins.js
@@ -0,0 +1,381 @@
+/**
+ * This class contains the Admins helper class declaration, along with the "Admins" tab 
+ * event handlers. By deviding the backend/users tab functionality into separate files
+ * it is easier to maintain the code.
+ * 
+ * @class AdminsHelper
+ */
+var AdminsHelper = function() {
+    this.filterResults = {}; // Store the results for later use.
+};
+
+/**
+ * Bind the event handlers for the backend/users "Admins" tab.
+ */
+AdminsHelper.prototype.bindEventHandlers = function() {
+    /**
+     * Event: Filter Admins Button "Click"
+     * 
+     * Filter the admin records with the given key string.
+     */
+    $('.filter-admins').click(function() {
+        var key = $('#admins .filter-key').val();
+        $('.selected-row').removeClass('selected-row');
+        BackendUsers.helper.resetForm();
+        BackendUsers.helper.filter(key);
+    });
+
+    /**
+     * Event: Filter Admin Row "Click"
+     * 
+     * Display the selected admin data to the user.
+     */
+    $(document).on('click', '.admin-row', function() {
+        if ($('#admins .filter-admins').prop('disabled')) {
+            $('#admins .filter-results').css('color', '#AAA');
+            return; // exit because we are currently on edit mode
+        }
+
+        var admin = { 'id': $(this).attr('data-id') };
+        $.each(BackendUsers.helper.filterResults, function(index, item) {
+            if (item.id === admin.id) {
+                admin = item;
+                return;
+            }
+        });
+        BackendUsers.helper.display(admin);
+        $('.selected-row').removeClass('selected-row');
+        $(this).addClass('selected-row');
+        $('#edit-admin, #delete-admin').prop('disabled', false);
+    });
+
+    /**
+     * Event: Add New Admin Button "Click"
+     */
+    $('#add-admin').click(function() {
+        BackendUsers.helper.resetForm();
+        $('#admins .add-edit-delete-group').hide();
+        $('#admins .save-cancel-group').show();
+        $('#admins .details').find('input, textarea').prop('readonly', false);
+        $('#admins .filter-admins').prop('disabled', true);
+        $('#admins .filter-results').css('color', '#AAA');
+        $('#admin-password, #admin-password-confirm').addClass('required');
+        $('#admin-notifications').prop('disabled', false);
+    });
+
+    /**
+     * Event: Edit Admin Button "Click"
+     */
+    $('#edit-admin').click(function() {
+        $('#admins .add-edit-delete-group').hide();
+        $('#admins .save-cancel-group').show();
+        $('.filter-admins').prop('disabled', true);
+        $('#admins .filter-results').css('color', '#AAA');
+        $('#admins .details').find('input, textarea').prop('readonly', false);
+        $('#admin-password, #admin-password-confirm').removeClass('required');
+        $('#admin-notifications').prop('disabled', false);
+    });
+
+    /**
+     * Event: Delete Admin Button "Click"
+     */
+    $('#delete-admin').click(function() {
+        var adminId = $('#admin-id').val();
+
+        var messageBtns = {
+            'Delete': function() {
+                BackendUsers.helper.delete(adminId);
+                $('#message_box').dialog('close');
+            },
+            'Cancel': function() {
+                $('#message_box').dialog('close');
+            }
+        };
+
+        GeneralFunctions.displayMessageBox('Delete Admin', 'Are you sure that you want '
+                + 'to delete this record? This action cannot be undone.', messageBtns);
+    });
+
+    /**
+     * Event: Save Admin Button "Click"
+     */
+    $('#save-admin').click(function() {
+        var admin = {
+            'first_name': $('#admin-first-name').val(),
+            'last_name': $('#admin-last-name').val(),
+            'email': $('#admin-email').val(),
+            'mobile_number': $('#admin-mobile-number').val(),
+            'phone_number': $('#admin-phone-number').val(),
+            'address': $('#admin-address').val(),
+            'city': $('#admin-city').val(),
+            'state': $('#admin-state').val(),
+            'zip_code': $('#admin-zip-code').val(),
+            'notes': $('#admin-notes').val(),
+            'settings': {
+                'username': $('#admin-username').val(),                    
+                'notifications': $('#admin-notifications').hasClass('active')
+            }
+        };
+
+        // Include password if changed.
+        if ($('#admin-password').val() !== '') {
+            admin.settings.password = $('#admin-password').val();
+        }
+
+        // Include id if changed.
+        if ($('#admin-id').val() !== '') {
+            admin.id = $('#admin-id').val();
+        }
+
+        if (!BackendUsers.helper.validate(admin)) return;
+
+        BackendUsers.helper.save(admin);
+    });
+
+    /**
+     * Event: Cancel Admin Button "Click"
+     * 
+     * Cancel add or edit of an admin record.
+     */
+    $('#cancel-admin').click(function() {
+        BackendUsers.helper.resetForm();
+        if ($('admins .selected-row').length == 0) return; 
+        var id = $('#admins .selected-row').attr('data-id');
+        BackendUsers.helper.selectRecord(id);
+    });
+};
+
+/**
+ * Save admin record to database.
+ * 
+ * @param {object} admin Contains the admin record data. If an 'id' value is provided
+ * then the update operation is going to be executed.
+ */
+AdminsHelper.prototype.save = function(admin) {
+    ////////////////////////////////////////////
+    //console.log('Admin data to save:', admin);
+    ////////////////////////////////////////////
+    
+    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_save_admin';
+    var postData = { 'admin': JSON.stringify(admin) };
+    
+    $.post(postUrl, postData, function(response) {
+        ////////////////////////////////////////////////
+        //console.log('Save Admin Response:', response);
+        ////////////////////////////////////////////////
+        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
+        Backend.displayNotification('Admin saved successfully!');
+        BackendUsers.helper.resetForm(true);
+        // When adding a new record the "admin.id" will be undefined. In this situation
+        // no record will be selected because we do not yet know the id of the new record,
+        // but no error will occur either.
+        BackendUsers.helper.filter($('#admins .filter-key').val(), admin.id); 
+    }, 'json');
+};
+
+/**
+ * Delete an admin record from database.
+ * 
+ * @param {int} id Record id to be deleted. 
+ */
+AdminsHelper.prototype.delete = function(id) {
+    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_delete_admin';
+    var postData = { 'admin_id': id };
+    
+    $.post(postUrl, postData, function(response) {
+        //////////////////////////////////////////////////
+        //console.log('Delete admin response:', response);
+        //////////////////////////////////////////////////
+        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
+        Backend.displayNotification('Admin deleted successfully!');
+        BackendUsers.helper.resetForm();
+        BackendUsers.helper.filter($('#admins .filter-key').val());
+    });
+};
+
+/**
+ * Validates an admin record.
+ * 
+ * @param {object} admin Contains the admin data to be validated.
+ * @returns {bool} Returns the validation result.
+ */
+AdminsHelper.prototype.validate = function(admin) {
+    $('#admins .required').css('border', '');
+    $('#admin-password, #admin-password-confirm').css('border', '');
+    
+    try {
+        // Validate required fields.
+        var missingRequired = false;
+        $('#admins .required').each(function() {
+            if ($(this).val() == '' || $(this).val() == undefined) {
+                $(this).css('border', '2px solid red');
+                missingRequired = true;
+            }
+        });
+        if (missingRequired) {
+            throw 'Fields with * are  required.';
+        }
+        
+        // Validate passwords.
+        if ($('#admin-password').val() != $('#admin-password-confirm').val()) {
+            $('#admin-password, #admin-password-confirm').css('border', '2px solid red');
+            throw 'Passwords mismatch!';
+        }
+        
+        if ($('#admin-password').val().length < BackendUsers.MIN_PASSWORD_LENGTH
+                && $('#admin-password').val() != '') {
+            $('#admin-password, #admin-password-confirm').css('border', '2px solid red');
+            throw 'Password must be at least ' + BackendUsers.MIN_PASSWORD_LENGTH 
+                    + ' characters long.';
+        }
+        
+        // Validate user email.
+        if (!GeneralFunctions.validateEmail($('#admin-email').val())) {
+            $('#admin-email').css('border', '2px solid red');
+            throw 'Invalid email address!';
+        }
+        
+        return true;
+    } catch(exc) {
+        $('#admins .form-message').text(exc);
+        $('#admins .form-message').show();
+        return false;
+    }
+};
+
+/**
+ * Resets the admin tab form back to its initial state. 
+ * 
+ * @param {bool} keepRecordData (OPTIONAL = false) If false then the current record data 
+ * will remain on the form.
+ */
+AdminsHelper.prototype.resetForm = function(keepRecordData) {
+    if (keepRecordData == undefined) keepRecordData = false;
+    
+    $('#admins .add-edit-delete-group').show();
+    $('#admins .save-cancel-group').hide();
+    $('#admins .details').find('input, textarea').prop('readonly', true);
+    $('.filter-admins').prop('disabled', false);
+    $('#admins .filter-results').css('color', '');
+    $('#admins .form-message').hide();    
+    $('#admin-notifications').prop('disabled', true);
+    $('#admins .required').css('border', '');
+    $('#admin-password, #admin-password-confirm').css('border', '');
+    
+    if (!keepRecordData) {
+        $('#admins .details').find('input, textarea').val('');
+        $('#admin-notifications').removeClass('active');
+        $('#edit-admin, #delete-admin').prop('disabled', true);
+    }
+};
+
+/**
+ * Display a admin record into the admin form.
+ * 
+ * @param {object} admin Contains the admin record data.
+ */
+AdminsHelper.prototype.display = function(admin) {
+    $('#admin-id').val(admin.id);
+    $('#admin-first-name').val(admin.first_name);
+    $('#admin-last-name').val(admin.last_name);
+    $('#admin-email').val(admin.email);
+    $('#admin-mobile-number').val(admin.mobile_number);
+    $('#admin-phone-number').val(admin.phone_number);
+    $('#admin-address').val(admin.address);
+    $('#admin-city').val(admin.city);
+    $('#admin-state').val(admin.state);
+    $('#admin-zip-code').val(admin.zip_code);
+    $('#admin-notes').val(admin.notes);
+    
+    $('#admin-username').val(admin.settings.username);
+    if (admin.settings.notifications == true) {
+        $('#admin-notifications').addClass('active');
+    } else {
+        $('#admin-notifications').removeClass('active');
+    }
+};
+
+/**
+ * Filters admin records depending a string key.
+ * 
+ * @param {string} key This is used to filter the admin records of the database.
+ */
+AdminsHelper.prototype.filter = function(key, selectRecordId) {
+    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_filter_admins';
+    var postData = { 'key': key };
+    
+    $.post(postUrl, postData, function(response) {
+        ///////////////////////////////////////////////////
+        //console.log('Filter admins response:', response);
+        ///////////////////////////////////////////////////
+        
+        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
+        
+        BackendUsers.helper.filterResults = response;
+        
+        $('#admins .filter-results').html('');
+        $.each(response, function(index, admin) {
+            var html = AdminsHelper.prototype.getFilterHtml(admin);
+            $('#admins .filter-results').append(html);
+        });
+        
+        if (selectRecordId != undefined) {
+            $('.admin-row').each(function() {
+                if ($(this).attr('data-id') == selectRecordId) {
+                    $(this).addClass('selected-row');
+                    return false;
+                }
+            });
+        }
+    }, 'json');
+};
+
+/**
+ * Get an admin row html code that is going to be displayed on the filter results list.
+ * 
+ * @param {object} admin Contains the admin record data.
+ * @returns {string} The html code that represents the record on the filter results list.
+ */
+AdminsHelper.prototype.getFilterHtml = function(admin) {
+    var html =
+            '<div class="admin-row" data-id="' + admin.id + '">' + 
+                '<strong>' + admin.first_name + ' ' + admin.last_name + '</strong><br>' +
+                admin.email + ', ' + admin.mobile_number + ', ' + admin.phone_number + '<br>' + 
+            '</div>';
+
+    return html;
+};
+
+/**
+ * Select a specific record from the current filter results. If the admin does not exist in 
+ * the list then no record will be selected. 
+ * 
+ * @param {numeric} id The record id to be selected.
+ * @param {bool} display (OPTIONAL = false) If true then the method will display the record
+ * on the form.
+ */
+AdminsHelper.prototype.selectRecord = function(id, display) {
+    if (display == undefined) display = false;
+    
+    $('#admins .selected-row').removeClass('selected-row');
+    
+    $('.admin-row').each(function() {
+        if ($(this).attr('data-id') == id) {
+            $(this).addClass('selected-row');
+            return;
+        }
+    });
+    
+    if (display) { 
+        var admin;
+        $.each(BackendUsers.helper.filterResults, function(index, item) {
+            if (item.id === id) {
+                admin = item;
+                BackendUsers.helper.display(admin);
+                $('#edit-admin, #delete-admin').prop('disabled', false);
+                return;
+            }
+        });
+    }
+};
+
diff --git a/src/assets/js/backend_users_providers.js b/src/assets/js/backend_users_providers.js
new file mode 100644
index 00000000..e188bdd4
--- /dev/null
+++ b/src/assets/js/backend_users_providers.js
@@ -0,0 +1,742 @@
+/**
+ * This class contains the Providers helper class declaration, along with the "Providers" tab 
+ * event handlers. By deviding the backend/users tab functionality into separate files
+ * it is easier to maintain the code.
+ * 
+ * @class ProvidersHelper
+ */
+var ProvidersHelper = function() {
+    this.filterResults = {}; // Store the results for later use.
+};
+
+/**
+ * Bind the event handlers for the backend/users "Providers" tab.
+ */
+ProvidersHelper.prototype.bindEventHandlers = function() {
+    /**
+     * Event: Filter Providers Button "Click"
+     * 
+     * Filter the provider records with the given key string.
+     */
+    $('.filter-providers').click(function() {
+        var key = $('#providers .filter-key').val();
+        $('.selected-row').removeClass('selected-row');
+        BackendUsers.helper.resetForm();
+        BackendUsers.helper.filter(key);
+    });
+
+    /**
+     * Event: Filter Provider Row "Click"
+     * 
+     * Display the selected provider data to the user.
+     */
+    $(document).on('click', '.provider-row', function() {
+        if ($('#providers .filter-providers').prop('disabled')) {
+            $('#providers .filter-results').css('color', '#AAA');
+            return; // exit because we are currently on edit mode
+        }
+
+        var provider = { 'id': $(this).attr('data-id') };
+        $.each(BackendUsers.helper.filterResults, function(index, item) {
+            if (item.id === provider.id) {
+                provider = item;
+                return;
+            }
+        });
+        BackendUsers.helper.display(provider);
+        $('.selected-row').removeClass('selected-row');
+        $(this).addClass('selected-row');
+        $('#edit-provider, #delete-provider').prop('disabled', false);
+    });
+
+    /**
+     * Event: Add New Provider Button "Click"
+     */
+    $('#add-provider').click(function() {
+        BackendUsers.helper.resetForm();
+        $('#providers .add-edit-delete-group').hide();
+        $('#providers .save-cancel-group').show();
+        $('#providers .details').find('input, textarea').prop('readonly', false);
+        $('#providers .filter-providers').prop('disabled', true);
+        $('#providers .filter-results').css('color', '#AAA');
+        $('#provider-password, #provider-password-confirm').addClass('required');
+        $('#provider-notifications').prop('disabled', false);
+        $('#provider-services input[type="checkbox"]').prop('disabled', false);
+
+        $('#providers .add-break').prop('disabled', false);
+        $('.edit-break, .delete-break').prop('disabled', false);
+        $('#providers input[type="checkbox"]').prop('disabled', false);
+
+        // Apply default working plan
+        $.each(GlobalVariables.workingPlan, function(index, workingDay) {
+            if (workingDay != null) {
+                $('#' + index).prop('checked', true);
+                $('#' + index + '-start').val(workingDay.start);
+                $('#' + index + '-end').val(workingDay.end);
+
+                // Add the day's breaks on the breaks table.
+                $.each(workingDay.breaks, function(i, brk) {
+                    var tr = 
+                            '<tr>' + 
+                                '<td class="break-day editable">' + GeneralFunctions.ucaseFirstLetter(index) + '</td>' +
+                                '<td class="break-start editable">' + brk.start + '</td>' +
+                                '<td class="break-end editable">' + brk.end + '</td>' +
+                                '<td>' + 
+                                    '<button type="button" class="btn edit-break" title="Edit Break">' +
+                                        '<i class="icon-pencil"></i>' +
+                                    '</button>' +
+                                    '<button type="button" class="btn delete-break" title="Delete Break">' +
+                                        '<i class="icon-remove"></i>' +
+                                    '</button>' +
+                                    '<button type="button" class="btn save-break hidden" title="Save Break">' +
+                                        '<i class="icon-ok"></i>' +
+                                    '</button>' +
+                                    '<button type="button" class="btn cancel-break hidden" title="Cancel Break">' +
+                                        '<i class="icon-ban-circle"></i>' +
+                                    '</button>' +
+                                '</td>' +
+                            '</tr>';
+                    $('#breaks').append(tr);
+                });
+            } else {
+                $('#' + index).prop('checked', false);
+                $('#' + index + '-start').prop('disabled', true);
+                $('#' + index + '-end').prop('disabled', true);
+            }
+        });
+
+        // Make break cells editable.
+        BackendUsers.helper.editableBreakDay($('#breaks .break-day'));
+        BackendUsers.helper.editableBreakTime($('#breaks').find('.break-start, .break-end'));
+
+        // Set timepickers where needed.
+        $('.working-plan input').timepicker({
+            'timeFormat': 'HH:mm',
+            'onSelect': function(datetime, inst) {
+                // Start time must be earlier than end time. 
+                var start = Date.parse($(this).parent().parent().find('.work-start').val());
+                var end = Date.parse($(this).parent().parent().find('.work-end').val());
+
+                if (start > end) {
+                    $(this).parent().parent().find('.work-end').val(start.addHours(1).toString('HH:mm'));
+                }
+            }
+        });
+    });
+
+    /**
+     * Event: Day Checkbox "Click"
+     * 
+     * Enable or disable the time selection for each day.
+     */
+    $('.working-plan input[type="checkbox"]').click(function() {
+        var id = $(this).attr('id');
+
+        if ($(this).prop('checked') == true) {
+            $('#' + id + '-start').prop('disabled', false).val('09:00');
+            $('#' + id + '-end').prop('disabled', false).val('18:00');
+        } else {
+            $('#' + id + '-start').prop('disabled', true).val('');
+            $('#' + id + '-end').prop('disabled', true).val('');
+        }
+    });
+
+    /**
+     * Event: Add Break Button "Click"
+     * 
+     * A new row is added on the table and the user can enter the new break 
+     * data. After that he can either press the save or cancel button.
+     */
+    $('.add-break').click(function() {
+        var tr = 
+                '<tr>' + 
+                    '<td class="break-day editable">Monday</td>' +
+                    '<td class="break-start editable">09:00</td>' +
+                    '<td class="break-end editable">10:00</td>' +
+                    '<td>' + 
+                        '<button type="button" class="btn edit-break" title="Edit Break">' +
+                            '<i class="icon-pencil"></i>' +
+                        '</button>' +
+                        '<button type="button" class="btn delete-break" title="Delete Break">' +
+                            '<i class="icon-remove"></i>' +
+                        '</button>' +
+                        '<button type="button" class="btn save-break hidden" title="Save Break">' +
+                            '<i class="icon-ok"></i>' +
+                        '</button>' +
+                        '<button type="button" class="btn cancel-break hidden" title="Cancel Break">' +
+                            '<i class="icon-ban-circle"></i>' +
+                        '</button>' +
+                    '</td>' +
+                '</tr>';
+        $('#breaks').prepend(tr);
+
+        // Bind editable and event handlers.
+        tr = $('#breaks tr').get()[1];
+        BackendUsers.helper.editableBreakDay($(tr).find('.break-day'));
+        BackendUsers.helper.editableBreakTime($(tr).find('.break-start, .break-end'));
+        $(tr).find('.edit-break').trigger('click');
+    });
+
+    /**
+     * Event: Edit Break Button "Click"
+     * 
+     * Enables the row editing for the "Breaks" table rows.
+     */
+    $(document).on('click', '.edit-break', function() {
+        // Reset previous editable tds
+        var $previousEdt = $(this).closest('table').find('.editable').get();
+        $.each($previousEdt, function(index, edt) {
+           edt.reset();
+        });
+
+        // Make all cells in current row editable.
+        $(this).parent().parent().children().trigger('edit');
+        $(this).parent().parent().find('.break-start input, .break-end input').timepicker();
+        $(this).parent().parent().find('.break-day select').focus();
+
+        // Show save - cancel buttons.
+        $(this).closest('table').find('.edit-break, .delete-break').addClass('hidden');
+        $(this).parent().find('.save-break, .cancel-break').removeClass('hidden');
+
+    });
+
+    /**
+     * Event: Delete Break Button "Click"
+     * 
+     * Removes the current line from the "Breaks" table.
+     */
+    $(document).on('click', '.delete-break', function() {
+       $(this).parent().parent().remove();
+    });
+
+    /**
+     * Event: Cancel Break Button "Click"
+     * 
+     * Bring the "#breaks" table back to its initial state.
+     */
+    $(document).on('click', '.cancel-break', function() {
+        BackendUsers.enableCancel = true;
+        $(this).parent().parent().find('.cancel-editable').trigger('click');
+        BackendUsers.enableCancel = false;
+
+        $(this).closest('table').find('.edit-break, .delete-break').removeClass('hidden');
+        $(this).parent().find('.save-break, .cancel-break').addClass('hidden');
+    });
+
+    /**
+     * Event: Save Break Button "Click"
+     * 
+     * Save the editable values and restore the table to its initial state.
+     */
+    $(document).on('click', '.save-break', function() {
+        // Break's start time must always be prior to break's end. 
+        var start = Date.parse($(this).parent().parent().find('.break-start input').val());
+        var end = Date.parse($(this).parent().parent().find('.break-end input').val());
+        if (start > end) {
+            $(this).parent().parent().find('.break-end  input').val(start.addHours(1).toString('HH:mm'));
+        }
+
+        BackendUsers.enableSubmit = true;
+        $(this).parent().parent().find('.editable .submit-editable').trigger('click');
+        BackendUsers.enableSubmit = false;
+
+        $(this).closest('table').find('.edit-break, .delete-break').removeClass('hidden');
+        $(this).parent().find('.save-break, .cancel-break').addClass('hidden');
+    });
+
+    /**
+     * Event: Edit Provider Button "Click"
+     */
+    $('#edit-provider').click(function() {
+        $('#providers .add-edit-delete-group').hide();
+        $('#providers .save-cancel-group').show();
+        $('.filter-providers').prop('disabled', true);
+        $('#providers .filter-results').css('color', '#AAA');
+        $('#providers .details').find('input, textarea').prop('readonly', false);
+        $('#provider-password, #provider-password-confirm').removeClass('required');
+        $('#provider-notifications').prop('disabled', false);
+        $('#provider-services input[type="checkbox"]').prop('disabled', false);
+
+        $('#providers .add-break').prop('disabled', false);
+        $('.edit-break, .delete-break').prop('disabled', false);
+        $('#providers input[type="checkbox"]').prop('disabled', false);
+    });
+
+    /**
+     * Event: Delete Provider Button "Click"
+     */
+    $('#delete-provider').click(function() {
+        var providerId = $('#provider-id').val();
+
+        var messageBtns = {
+            'Delete': function() {
+                BackendUsers.helper.delete(providerId);
+                $('#message_box').dialog('close');
+            },
+            'Cancel': function() {
+                $('#message_box').dialog('close');
+            }
+        };
+
+        GeneralFunctions.displayMessageBox('Delete Provider', 'Are you sure that you want '
+                + 'to delete this record? This action cannot be undone.', messageBtns);
+    });
+
+    /**
+     * Event: Save Provider Button "Click"
+     */
+    $('#save-provider').click(function() {
+        var provider = {
+            'first_name': $('#provider-first-name').val(),
+            'last_name': $('#provider-last-name').val(),
+            'email': $('#provider-email').val(),
+            'mobile_number': $('#provider-mobile-number').val(),
+            'phone_number': $('#provider-phone-number').val(),
+            'address': $('#provider-address').val(),
+            'city': $('#provider-city').val(),
+            'state': $('#provider-state').val(),
+            'zip_code': $('#provider-zip-code').val(),
+            'notes': $('#provider-notes').val(),
+            'settings': {
+                'username': $('#provider-username').val(),  
+                'working_plan': BackendUsers.helper.getWorkingPlan(),
+                'notifications': $('#provider-notifications').hasClass('active')
+            }
+        };
+
+        // Include provider services.
+        provider.services = [];
+        $('#provider-services input[type="checkbox"]').each(function() {
+            if ($(this).prop('checked')) {
+                provider.services.push($(this).attr('data-id'));
+            }
+        });
+
+        // Include password if changed.
+        if ($('#provider-password').val() !== '') {
+            provider.settings.password = $('#provider-password').val();
+        }
+
+        // Include id if changed.
+        if ($('#provider-id').val() !== '') {
+            provider.id = $('#provider-id').val();
+        }
+
+        if (!BackendUsers.helper.validate(provider)) return;
+
+        BackendUsers.helper.save(provider);
+    });
+
+    /**
+     * Event: Cancel Provider Button "Click"
+     * 
+     * Cancel add or edit of an provider record.
+     */
+    $('#cancel-provider').click(function() {
+        BackendUsers.helper.resetForm();
+
+        var provider = { 'id': $('#providers .selected-row').attr('data-id') };
+
+        $.each(BackendUsers.helper.filterResults, function(index, item) {
+            if (item.id === provider.id) {
+                provider = item;
+                return;
+            }
+        });
+
+        BackendUsers.helper.display(provider);
+
+        $('#edit-provider, #delete-provider').prop('disabled', false);
+    });
+
+    /**
+     * Event: Display Provider Details "Click"
+     */
+    $('#providers .display-details').click(function() {
+        $('#providers .switch-view .current').removeClass('current');
+        $(this).addClass('current');
+        $('.working-plan-view').hide('fade', function() {
+            $('.details-view').show('fade');
+        });
+
+    });
+
+    /**
+     * Event: Display Provider Working Plan "Click"
+     */
+    $('#providers .display-working-plan').click(function() {
+        $('#providers .switch-view .current').removeClass('current');
+        $(this).addClass('current');
+        $('.details-view').hide('fade', function() {
+            $('.working-plan-view').show('fade');
+        });
+    });
+};
+
+/**
+ * Save provider record to database.
+ * 
+ * @param {object} provider Contains the admin record data. If an 'id' value is provided
+ * then the update operation is going to be executed.
+ */
+ProvidersHelper.prototype.save = function(provider) {
+    //////////////////////////////////////////////////
+    //console.log('Provider data to save:', provider);
+    //////////////////////////////////////////////////
+    
+    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_save_provider';
+    var postData = { 'provider': JSON.stringify(provider) };
+    
+    $.post(postUrl, postData, function(response) {
+        ///////////////////////////////////////////////////
+        //console.log('Save Provider Response:', response);
+        ///////////////////////////////////////////////////
+        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
+        Backend.displayNotification('Provider saved successfully!');
+        BackendUsers.helper.resetForm(true);
+        // If "id" is not defined then no record will be selected (applies when adding 
+        // a new provider record).
+        BackendUsers.helper.filter($('#providers .filter-key').val(), provider.id); 
+    }, 'json');
+};
+
+/**
+ * Delete a provider record from database.
+ * 
+ * @param {int} id Record id to be deleted. 
+ */
+ProvidersHelper.prototype.delete = function(id) {
+    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_delete_provider';
+    var postData = { 'provider_id': id };
+    
+    $.post(postUrl, postData, function(response) {
+        /////////////////////////////////////////////////////
+        //console.log('Delete provider response:', response);
+        /////////////////////////////////////////////////////
+        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
+        Backend.displayNotification('Provider deleted successfully!');
+        BackendUsers.helper.resetForm();
+        BackendUsers.helper.filter($('#providers .filter-key').val());
+    });
+};
+
+/**
+ * Validates a provider record.
+ * 
+ * @param {object} provider Contains the admin data to be validated.
+ * @returns {bool} Returns the validation result.
+ */
+ProvidersHelper.prototype.validate = function(provider) {
+    $('#providers .required').css('border', '');
+    $('#provider-password, #provider-password-confirm').css('border', '');
+    
+    try {
+        // Validate required fields.
+        var missingRequired = false;
+        $('#providers .required').each(function() {
+            if ($(this).val() == '' || $(this).val() == undefined) {
+                $(this).css('border', '2px solid red');
+                missingRequired = true;
+            }
+        });
+        if (missingRequired) {
+            throw 'Fields with * are  required.';
+        }
+        
+        // Validate passwords.
+        if ($('#provider-password').val() != $('#provider-password-confirm').val()) {
+            $('#provider-password, #provider-password-confirm').css('border', '2px solid red');
+            throw 'Passwords mismatch!';
+        }
+        
+        if ($('#provider-password').val().length < BackendUsers.MIN_PASSWORD_LENGTH
+                && $('#provider-password').val() != '') {
+            $('#provider-password, #provider-password-confirm').css('border', '2px solid red');
+            throw 'Password must be at least ' + BackendUsers.MIN_PASSWORD_LENGTH 
+                    + ' characters long.';
+        }
+        
+        // Validate user email.
+        if (!GeneralFunctions.validateEmail($('#provider-email').val())) {
+            $('#provider-email').css('border', '2px solid red');
+            throw 'Invalid email address!';
+        }
+        
+        return true;
+    } catch(exc) {
+        $('#providers .form-message').text(exc);
+        $('#providers .form-message').show();
+        return false;
+    }
+};
+
+/**
+ * Resets the admin tab form back to its initial state. 
+ * 
+ * @param {bool} keepRecordData (OPTIONAL = false) If true then the current record data will
+ * remain on the form.
+ */
+ProvidersHelper.prototype.resetForm = function(keepRecordData) {
+    if (keepRecordData == undefined) keepRecordData = false;
+    
+    $('#providers .add-edit-delete-group').show();
+    $('#providers .save-cancel-group').hide();
+    $('#providers .details').find('input, textarea').prop('readonly', true);
+    $('.filter-providers').prop('disabled', false);
+    $('#providers .filter-results').css('color', '');
+    $('#providers .form-message').hide();    
+    $('#provider-notifications').removeClass('active');
+    $('#provider-notifications').prop('disabled', true);
+    $('#provider-services input[type="checkbox"]').prop('disabled', true);
+    $('#providers .required').css('border', '');
+    $('#provider-password, #provider-password-confirm').css('border', '');
+    $('#providers .add-break').prop('disabled', true);
+    $('#providers input[type="checkbox"]').prop('disabled', true);
+    $('#providers .working-plan input[type="text"]').timepicker('destroy');
+    $('#breaks').find('.edit-break, .delete-break').prop('disabled', true);
+    
+    if (!keepRecordData) {
+        $('#edit-provider, #delete-provider').prop('disabled', true);
+        $('#providers .details').find('input, textarea').val('');
+        $('#providers input[type="checkbox"]').prop('checked', false);
+        $('#provider-services input[type="checkbox"]').prop('checked', false);
+        $('#providers #breaks tbody').empty();
+    }
+};
+
+/**
+ * Display a provider record into the admin form.
+ * 
+ * @param {object} provider Contains the provider record data.
+ */
+ProvidersHelper.prototype.display = function(provider) {
+    $('#provider-id').val(provider.id);
+    $('#provider-first-name').val(provider.first_name);
+    $('#provider-last-name').val(provider.last_name);
+    $('#provider-email').val(provider.email);
+    $('#provider-mobile-number').val(provider.mobile_number);
+    $('#provider-phone-number').val(provider.phone_number);
+    $('#provider-address').val(provider.address);
+    $('#provider-city').val(provider.city);
+    $('#provider-state').val(provider.state);
+    $('#provider-zip-code').val(provider.zip_code);
+    $('#provider-notes').val(provider.notes);
+    
+    $('#provider-username').val(provider.settings.username);
+    if (provider.settings.notifications == true) {
+        $('#provider-notifications').addClass('active');
+    } else {
+        $('#provider-notifications').removeClass('active');
+    }
+    
+    $('#provider-services input[type="checkbox"]').prop('checked', false);
+    $.each(provider.services, function(index, serviceId) {
+        $('#provider-services input[type="checkbox"]').each(function() {
+            if ($(this).attr('data-id') == serviceId) {
+                $(this).prop('checked', true);
+            }
+        });
+    });
+    
+    // Display working plan
+    $('#providers #breaks tbody').empty();
+    var workingPlan = $.parseJSON(provider.settings.working_plan);
+    $.each(workingPlan, function(index, workingDay) {
+        if (workingDay != null) {
+            $('#' + index).prop('checked', true);
+            $('#' + index + '-start').val(workingDay.start);
+            $('#' + index + '-end').val(workingDay.end);
+
+            // Add the day's breaks on the breaks table.
+            $.each(workingDay.breaks, function(i, brk) {
+                var tr = 
+                        '<tr>' + 
+                            '<td class="break-day editable">' + GeneralFunctions.ucaseFirstLetter(index) + '</td>' +
+                            '<td class="break-start editable">' + brk.start + '</td>' +
+                            '<td class="break-end editable">' + brk.end + '</td>' +
+                            '<td>' + 
+                                '<button type="button" class="btn edit-break" title="Edit Break">' +
+                                    '<i class="icon-pencil"></i>' +
+                                '</button>' +
+                                '<button type="button" class="btn delete-break" title="Delete Break">' +
+                                    '<i class="icon-remove"></i>' +
+                                '</button>' +
+                                '<button type="button" class="btn save-break hidden" title="Save Break">' +
+                                    '<i class="icon-ok"></i>' +
+                                '</button>' +
+                                '<button type="button" class="btn cancel-break hidden" title="Cancel Break">' +
+                                    '<i class="icon-ban-circle"></i>' +
+                                '</button>' +
+                            '</td>' +
+                        '</tr>';
+                $('#breaks').append(tr);
+            });
+        } else {
+            $('#' + index).prop('checked', false);
+            $('#' + index + '-start').prop('disabled', true);
+            $('#' + index + '-end').prop('disabled', true);
+        }
+    });
+    
+    $('.edit-break, .delete-break').prop('disabled', true);
+
+    // Make break cells editable.
+    BackendUsers.helper.editableBreakDay($('#breaks .break-day'));
+    BackendUsers.helper.editableBreakTime($('#breaks').find('.break-start, .break-end'));
+
+    // Set timepickers where needed.
+    $('.working-plan input').timepicker({
+        'timeFormat': 'HH:mm',
+        'onSelect': function(datetime, inst) {
+            // Start time must be earlier than end time. 
+            var start = Date.parse($(this).parent().parent().find('.work-start').val());
+            var end = Date.parse($(this).parent().parent().find('.work-end').val());
+
+            if (start > end) {
+                $(this).parent().parent().find('.work-end').val(start.addHours(1).toString('HH:mm'));
+            }
+        }
+    });
+};
+
+/**
+ * Filters provider records depending a string key.
+ * 
+ * @param {string} key This is used to filter the provider records of the database.
+ * @param {numeric} selectRecordId (OPTIONAL) If set, when the function is complete
+ * a result row can be set as selected. 
+ */
+ProvidersHelper.prototype.filter = function(key, selectRecordId) {
+    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_filter_providers';
+    var postData = { 'key': key };
+    
+    $.post(postUrl, postData, function(response) {
+        //////////////////////////////////////////////////////
+        //console.log('Filter providers response:', response);
+        //////////////////////////////////////////////////////
+        
+        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
+        
+        BackendUsers.helper.filterResults = response;
+        
+        $('#providers .filter-results').html('');
+        $.each(response, function(index, provider) {
+            var html = ProvidersHelper.prototype.getFilterHtml(provider);
+            $('#providers .filter-results').append(html);
+        });
+        
+        if (selectRecordId != undefined) {
+            $('.provider-row').each(function() {
+                if ($(this).attr('data-id') == selectRecordId) {
+                    $(this).addClass('selected-row');
+                    return false;
+                }
+            });
+        }
+    }, 'json');
+};
+
+/**
+ * Get an provider row html code that is going to be displayed on the filter results list.
+ * 
+ * @param {object} provider Contains the provider record data.
+ * @returns {string} The html code that represents the record on the filter results list.
+ */
+ProvidersHelper.prototype.getFilterHtml = function(provider) {
+    var html =
+            '<div class="provider-row" data-id="' + provider.id + '">' + 
+                '<strong>' + provider.first_name + ' ' + provider.last_name + '</strong><br>' +
+                provider.email + ', ' + provider.mobile_number + ', ' + provider.phone_number + '<br>' + 
+            '</div>';
+
+    return html;
+};
+
+/**
+ * Get the current working plan.
+ * 
+ * @return {string} Returns the working plan (already stringified).
+ */
+ProvidersHelper.prototype.getWorkingPlan = function() {
+    var workingPlan = {};
+    $('.working-plan input[type="checkbox"').each(function() {
+        var id = $(this).attr('id');
+        if ($(this).prop('checked') == true) {
+            workingPlan[id] = {}
+            workingPlan[id].start = $('#' + id + '-start').val();
+            workingPlan[id].end = $('#' + id + '-end').val();
+            workingPlan[id].breaks = [];
+            
+            $('#breaks tr').each(function(index, tr) {
+                var day = $(tr).find('.break-day').text().toLowerCase();
+                if (day == id) {
+                    var start = $(tr).find('.break-start').text();
+                    var end = $(tr).find('.break-end').text();
+                    
+                    workingPlan[id].breaks.push({
+                        'start': start,
+                        'end': end
+                    });
+                    
+                }
+            });
+            
+        } else {
+            workingPlan[id] = null;
+        }
+    });
+    
+    return JSON.stringify(workingPlan);
+};
+
+
+/**
+ * Initialize the editable functionality to the break day table cells.
+ * 
+ * @param {object} $selector The cells to be initialized.
+ */
+ProvidersHelper.prototype.editableBreakDay = function($selector) {
+    $selector.editable(function(value, settings) {
+        return value;
+    }, {
+        'type': 'select',
+        'data': '{ "Monday": "Monday", "Tuesday": "Tuesday", "Wednesday": "Wednesday", '
+                + '"Thursday": "Thursday", "Friday": "Friday", "Saturday": "Saturday", '
+                + '"Sunday": "Sunday", "selected": "Monday"}',
+        'event': 'edit',
+        'height': '30px',
+        'submit': '<button type="button" class="hidden submit-editable">Submit</button>',
+        'cancel': '<button type="button" class="hidden cancel-editable">Cancel</button>',
+        'onblur': 'ignore',
+        'onreset': function(settings, td) {
+            if (!BackendUsers.enableCancel) return false; // disable ESC button
+        },
+        'onsubmit': function(settings, td) {
+            if (!BackendUsers.enableSubmit) return false; // disable Enter button
+        }
+    });
+},
+
+/**
+ * Initialize the editable functionality to the break time table cells.
+ * 
+ * @param {object} $selector The cells to be initialized.
+ */        
+ProvidersHelper.prototype.editableBreakTime = function($selector) {
+    $selector.editable(function(value, settings) {
+        // Do not return the value because the user needs to press the "Save" button.
+        return value;
+    }, {
+        'event': 'edit',
+        'height': '25px',
+        'submit': '<button type="button" class="hidden submit-editable">Submit</button>',
+        'cancel': '<button type="button" class="hidden cancel-editable">Cancel</button>',
+        'onblur': 'ignore',
+        'onreset': function(settings, td) {
+            if (!BackendUsers.enableCancel) return false; // disable ESC button
+        },
+        'onsubmit': function(settings, td) {
+            if (!BackendUsers.enableSubmit) return false; // disable Enter button
+        }
+    });
+}
\ No newline at end of file
diff --git a/src/assets/js/backend_users_secretaries.js b/src/assets/js/backend_users_secretaries.js
new file mode 100644
index 00000000..4347d2f4
--- /dev/null
+++ b/src/assets/js/backend_users_secretaries.js
@@ -0,0 +1,356 @@
+/**
+ * This class contains the Secretaries helper class declaration, along with the "Secretaries"  
+ * tab event handlers. By deviding the backend/users tab functionality into separate files
+ * it is easier to maintain the code.
+ * 
+ * @class SecretariesHelper
+ */
+var SecretariesHelper = function() {
+    this.filterResults = {}; // Store the results for later use.
+};
+
+/**
+ * Bind the event handlers for the backend/users "Secretaries" tab.
+ */
+SecretariesHelper.prototype.bindEventHandlers = function() {
+    /**
+     * Event: Filter Secretaries Button "Click"
+     * 
+     * Filter the secretary records with the given key string.
+     */
+    $('.filter-secretaries').click(function() {
+        var key = $('#secretaries .filter-key').val();
+        $('.selected-row').removeClass('selected-row');
+        BackendUsers.helper.resetForm();
+        BackendUsers.helper.filter(key);
+    });
+
+    /**
+     * Event: Filter Secretary Row "Click"
+     * 
+     * Display the selected secretary data to the user.
+     */
+    $(document).on('click', '.secretary-row', function() {
+        if ($('#secretaries .filter-secretaries').prop('disabled')) {
+            $('#secretaries .filter-results').css('color', '#AAA');
+            return; // exit because we are currently on edit mode
+        }
+
+        var secretary = { 'id': $(this).attr('data-id') };
+        $.each(BackendUsers.helper.filterResults, function(index, item) {
+            if (item.id === secretary.id) {
+                secretary = item;
+                return;
+            }
+        });
+        BackendUsers.helper.display(secretary);
+        $('.selected-row').removeClass('selected-row');
+        $(this).addClass('selected-row');
+        $('#edit-secretary, #delete-secretary').prop('disabled', false);
+    });
+
+    /**
+     * Event: Add New Secretary Button "Click"
+     */
+    $('#add-secretary').click(function() {
+        BackendUsers.helper.resetForm();
+        $('#secretaries .add-edit-delete-group').hide();
+        $('#secretaries .save-cancel-group').show();
+        $('#secretaries .details').find('input, textarea').prop('readonly', false);
+        $('#secretaries .filter-secretaries').prop('disabled', true);
+        $('#secretaries .filter-results').css('color', '#AAA');
+        $('#secretary-password, #secretary-password-confirm').addClass('required');
+        $('#secretary-notifications').prop('disabled', false);
+        $('#secretary-providers input[type="checkbox"]').prop('disabled', false);
+    });
+
+    /**
+     * Event: Edit Secretary Button "Click"
+     */
+    $('#edit-secretary').click(function() {
+        $('#secretaries .add-edit-delete-group').hide();
+        $('#secretaries .save-cancel-group').show();
+        $('.filter-secretaries').prop('disabled', true);
+        $('#secretaries .filter-results').css('color', '#AAA');
+        $('#secretaries .details').find('input, textarea').prop('readonly', false);
+        $('#secretary-password, #secretary-password-confirm').removeClass('required');
+        $('#secretary-notifications').prop('disabled', false);
+        $('#secretary-providers input[type="checkbox"]').prop('disabled', false);
+    });
+
+    /**
+     * Event: Delete Secretary Button "Click"
+     */
+    $('#delete-secretary').click(function() {
+        var providerId = $('#secretary-id').val();
+
+        var messageBtns = {
+            'Delete': function() {
+                BackendUsers.helper.delete(providerId);
+                $('#message_box').dialog('close');
+            },
+            'Cancel': function() {
+                $('#message_box').dialog('close');
+            }
+        };
+
+        GeneralFunctions.displayMessageBox('Delete Secretary', 'Are you sure that you want '
+                + 'to delete this record? This action cannot be undone.', messageBtns);
+    });
+
+    /**
+     * Event: Save Secretary Button "Click"
+     */
+    $('#save-secretary').click(function() {
+        var secretary = {
+            'first_name': $('#secretary-first-name').val(),
+            'last_name': $('#secretary-last-name').val(),
+            'email': $('#secretary-email').val(),
+            'mobile_number': $('#secretary-mobile-number').val(),
+            'phone_number': $('#secretary-phone-number').val(),
+            'address': $('#secretary-address').val(),
+            'city': $('#secretary-city').val(),
+            'state': $('#secretary-state').val(),
+            'zip_code': $('#secretary-zip-code').val(),
+            'notes': $('#secretary-notes').val(),
+            'settings': {
+                'username': $('#secretary-username').val(),                    
+                'notifications': $('#secretary-notifications').hasClass('active')
+            }
+        };
+
+        // Include secretary services.
+        secretary.providers = [];
+        $('#secretary-providers input[type="checkbox"]').each(function() {
+            if ($(this).prop('checked')) {
+                secretary.providers.push($(this).attr('data-id'));
+            }
+        });
+
+        // Include password if changed.
+        if ($('#secretary-password').val() !== '') {
+            secretary.settings.password = $('#secretary-password').val();
+        }
+
+        // Include id if changed.
+        if ($('#secretary-id').val() !== '') {
+            secretary.id = $('#secretary-id').val();
+        }
+
+        if (!BackendUsers.helper.validate(secretary)) return;
+
+        BackendUsers.helper.save(secretary);
+    });
+
+    /**
+     * Event: Cancel Secretary Button "Click"
+     * 
+     * Cancel add or edit of an secretary record.
+     */
+    $('#cancel-secretary').click(function() {
+        BackendUsers.helper.resetForm();
+    });
+};
+
+/**
+ * Save secretary record to database.
+ * 
+ * @param {object} secretary Contains the admin record data. If an 'id' value is provided
+ * then the update operation is going to be executed.
+ */
+SecretariesHelper.prototype.save = function(secretary) {
+    ////////////////////////////////////////////////////
+    //console.log('Secretary data to save:', secretary);
+    ////////////////////////////////////////////////////
+    
+    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_save_secretary';
+    var postData = { 'secretary': JSON.stringify(secretary) };
+    
+    $.post(postUrl, postData, function(response) {
+        ////////////////////////////////////////////////////
+        //console.log('Save Secretary Response:', response);
+        ////////////////////////////////////////////////////
+        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
+        Backend.displayNotification('Secretary saved successfully!');
+        BackendUsers.helper.resetForm();
+        BackendUsers.helper.filter($('#secretaries .filter-key').val());
+    }, 'json');
+};
+
+/**
+ * Delete a secretary record from database.
+ * 
+ * @param {int} id Record id to be deleted. 
+ */
+SecretariesHelper.prototype.delete = function(id) {
+    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_delete_secretary';
+    var postData = { 'secretary_id': id };
+    
+    $.post(postUrl, postData, function(response) {
+        //////////////////////////////////////////////////////
+        //console.log('Delete secretary response:', response);
+        //////////////////////////////////////////////////////
+        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
+        Backend.displayNotification('Secretary deleted successfully!');
+        BackendUsers.helper.resetForm();
+        BackendUsers.helper.filter($('#secretaries .filter-key').val());
+    });
+};
+
+/**
+ * Validates a secretary record.
+ * 
+ * @param {object} secretary Contains the admin data to be validated.
+ * @returns {bool} Returns the validation result.
+ */
+SecretariesHelper.prototype.validate = function(secretary) {
+    $('#secretaries .required').css('border', '');
+    $('#secretary-password, #secretary-password-confirm').css('border', '');
+    
+    try {
+        // Validate required fields.
+        var missingRequired = false;
+        $('#secretaries .required').each(function() {
+            if ($(this).val() == '' || $(this).val() == undefined) {
+                $(this).css('border', '2px solid red');
+                missingRequired = true;
+            }
+        });
+        if (missingRequired) {
+            throw 'Fields with * are  required.';
+        }
+        
+        // Validate passwords.
+        if ($('#secretary-password').val() != $('#secretary-password-confirm').val()) {
+            $('#secretary-password, #secretary-password-confirm').css('border', '2px solid red');
+            throw 'Passwords mismatch!';
+        }
+        
+        if ($('#secretary-password').val().length < BackendUsers.MIN_PASSWORD_LENGTH
+                && $('#secretary-password').val() != '') {
+            $('#secretary-password, #secretary-password-confirm').css('border', '2px solid red');
+            throw 'Password must be at least ' + BackendUsers.MIN_PASSWORD_LENGTH 
+                    + ' characters long.';
+        }
+        
+        // Validate user email.
+        if (!GeneralFunctions.validateEmail($('#secretary-email').val())) {
+            $('#secretary-email').css('border', '2px solid red');
+            throw 'Invalid email address!';
+        }
+        
+        return true;
+    } catch(exc) {
+        $('#secretaries .form-message').text(exc);
+        $('#secretaries .form-message').show();
+        return false;
+    }
+};
+
+/**
+ * Resets the admin tab form back to its initial state. 
+ */
+SecretariesHelper.prototype.resetForm = function() {
+    $('#secretaries .details').find('input, textarea').val('');
+    $('#secretaries .add-edit-delete-group').show();
+    $('#secretaries .save-cancel-group').hide();
+    $('#edit-secretary, #delete-secretary').prop('disabled', true);
+    $('#secretaries .details').find('input, textarea').prop('readonly', true);
+    $('.filter-secretaries').prop('disabled', false);
+    $('#secretaries .filter-results').css('color', '');
+    $('#secretaries .form-message').hide();    
+    $('#secretary-notifications').removeClass('active');
+    $('#secretary-notifications').prop('disabled', true);
+    $('#secretary-providers input[type="checkbox"]').prop('checked', false);
+    $('#secretary-providers input[type="checkbox"]').prop('disabled', true);
+    $('#secretaries .required').css('border', '');
+    $('#secretary-password, #secretary-password-confirm').css('border', '');
+};
+
+/**
+ * Display a secretary record into the admin form.
+ * 
+ * @param {object} secretary Contains the secretary record data.
+ */
+SecretariesHelper.prototype.display = function(secretary) {
+    $('#secretary-id').val(secretary.id);
+    $('#secretary-first-name').val(secretary.first_name);
+    $('#secretary-last-name').val(secretary.last_name);
+    $('#secretary-email').val(secretary.email);
+    $('#secretary-mobile-number').val(secretary.mobile_number);
+    $('#secretary-phone-number').val(secretary.phone_number);
+    $('#secretary-address').val(secretary.address);
+    $('#secretary-city').val(secretary.city);
+    $('#secretary-state').val(secretary.state);
+    $('#secretary-zip-code').val(secretary.zip_code);
+    $('#secretary-notes').val(secretary.notes);
+    
+    $('#secretary-username').val(secretary.settings.username);
+    if (secretary.settings.notifications == true) {
+        $('#secretary-notifications').addClass('active');
+    } else {
+        $('#secretary-notifications').removeClass('active');
+    }
+    
+    $('#secretary-providers input[type="checkbox"]').prop('checked', false);
+    $.each(secretary.providers, function(index, providerId) {
+        $('#secretary-providers input[type="checkbox"]').each(function() {
+            if ($(this).attr('data-id') == providerId) {
+                $(this).prop('checked', true);
+            }
+        });
+    });
+};
+
+/**
+ * Filters secretary records depending a string key.
+ * 
+ * @param {string} key This is used to filter the secretary records of the database.
+ * @param {numeric} selectRecordId (OPTIONAL) If provided then the given id will be 
+ * selected in the filter results (only selected, not displayed).
+ */
+SecretariesHelper.prototype.filter = function(key, selectRecordId) {
+    var postUrl = GlobalVariables.baseUrl + 'backend_api/ajax_filter_secretaries';
+    var postData = { 'key': key };
+    
+    $.post(postUrl, postData, function(response) {
+        ////////////////////////////////////////////////////////
+        //console.log('Filter secretaries response:', response);
+        ////////////////////////////////////////////////////////
+        
+        if (!GeneralFunctions.handleAjaxExceptions(response)) return;
+        
+        BackendUsers.helper.filterResults = response;
+        
+        $('#secretaries .filter-results').html('');
+        $.each(response, function(index, secretary) {
+            var html = SecretariesHelper.prototype.getFilterHtml(secretary);
+            $('#secretaries .filter-results').append(html);
+        });
+        
+        if (selectRecordId != undefined) {
+            $('.secretary-row').each(function() {
+                if ($(this).attr('data-id') == selectRecordId) {
+                    $(this).addClass('selected-row');
+                    return false;
+                }
+            });
+        }
+    }, 'json');
+};
+
+/**
+ * Get an secretary row html code that is going to be displayed on the filter results list.
+ * 
+ * @param {object} secretary Contains the secretary record data.
+ * @returns {string} The html code that represents the record on the filter results list.
+ */
+SecretariesHelper.prototype.getFilterHtml = function(secretary) {
+    var html =
+            '<div class="secretary-row" data-id="' + secretary.id + '">' + 
+                '<strong>' + secretary.first_name + ' ' + secretary.last_name + '</strong><br>' +
+                secretary.email + ', ' + secretary.mobile_number + ', ' + secretary.phone_number + '<br>' + 
+            '</div>';
+
+    return html;
+};
\ No newline at end of file