FCKEditor validation using jquery

I’ve written a quick jQuery plugin which allows you to validate an FCKEditor instancing using jQuery.  This plugin will both validate FCKEditor instances both on-the-fly (as you type), and when you attempt to submit a form.

jQuery library file for FCKEditor Validation:

// JavaScript Document
/** FCKEditor Validation for jQuery
*
* Validates FCKEditor Instances when a form is submitted, and on-the-fly to monitor changes if the form submission fails i.e. an FCKEditor is missing
* content.  It's a basic plugin, and has a few quirks:
* - IE issue with OnSelectionChange event doesn't always fire, this is down to FCKEditor
* - On-the-fly field monitoring not available until the form is submitted
*
* @package fckEditorValidate
* @author Tim Carr
* @version 1.0
*
*/
jQuery.fn.fckEditorValidate = function(settings) {
settings = jQuery.extend(
{
instanceName: 'content',
preventFormSubmit: true,
showValidationError: true,
showValidationErrorBeforeFCKEditor: false,
validationErrorClass: 'fckValidateError',
validationErrorMessage: 'Description field is required'
},
settings);

// Check every form we submit
var thisFormElement;
$("form").bind("submit", function(e) {
thisFormElement = $(this);

// Check it's a valid instance of the FCKEditor
if (typeof(FCKeditorAPI) != 'undefined') {
if (typeof FCKeditorAPI.GetInstance(settings.instanceName) == 'object') {
// Attach event
FCKeditorAPI.GetInstance(settings.instanceName).Events.AttachEvent( 'OnSelectionChange', CheckFCKEditor ) ;

// Submit check
if (FCKeditorAPI.GetInstance(settings.instanceName).GetXHTML() == "") {
// Show Error
if (settings.showValidationError) {
if ($("#"+settings.instanceName+"_error").length == 0) {
if (settings.showValidationErrorBeforeFCKEditor) {
// Show validation error message before the FCKEditor iframe
$("#"+settings.instanceName+"___Frame", this).before("<label id=\""+settings.instanceName+"_error\" for=\""+settings.instanceName+"\" class=\""+settings.validationErrorClass+"\" style=\"display: block;\">"+settings.validationErrorMessage+"</label>");
} else {
// Show validation error message after the FCKEditor iframe
$("#"+settings.instanceName+"___Frame", this).after("<label id=\""+settings.instanceName+"_error\" for=\""+settings.instanceName+"\" class=\""+settings.validationErrorClass+"\" style=\"display: block;\">"+settings.validationErrorMessage+"</label>");
}
}
}

// Prevent the form from submitting
if (settings.preventFormSubmit) {
return false;
}
}
} // Close Instance Check
} // Close null Check
});

function CheckFCKEditor(editorInstance) {
var contentHTML = editorInstance.GetXHTML();
if (settings.showValidationError) {
if (contentHTML == "") {
// No content exists - show error message
if ($("#"+settings.instanceName+"_error").length == 0) {
if (settings.showValidationErrorBeforeFCKEditor) {
// Show validation error message before the FCKEditor iframe
$("#"+settings.instanceName+"___Frame", thisFormElement).before("<label id=\""+settings.instanceName+"_error\" for=\""+settings.instanceName+"\" class=\""+settings.validationErrorClass+"\" style=\"display: block;\">"+settings.validationErrorMessage+"</label>");
} else {
// Show validation error message after the FCKEditor iframe
$(" #"+settings.instanceName+"___Frame", thisFormElement).after("<label id=\""+settings.instanceName+"_error\" for=\""+settings.instanceName+"\" class=\""+settings.validationErrorClass+"\" style=\"display: block;\">"+settings.validationErrorMessage+"</label>");
}
}
} else {
// Content exists - remove error message
if ($("#"+settings.instanceName+"_error").length > 0) {
$("#"+settings.instanceName+"_error").remove();
}
}
}
}
};

Code :
if(typeof jQuery.fn.fckEditorValidate == 'function') {
jQuery.fn.fckEditorValidate({instanceName: 'description'});
}

Example :
$(document).ready(function(){
   if(typeof jQuery.fn.fckEditorValidate == 'function') {
jQuery.fn.fckEditorValidate({instanceName: 'description'});
}
   $("#addform").validate({
     messages: {
      name: { required: 'Name field is required' },
      image: { required: 'Image field is required' }
     }
    });
   });