main.js

// ===================================================================
// === FUNCTION TO SUPPORT CROSS-DOMAIN AJAX REQUESTS FOR CAT TREE ===
// ===================================================================

jQuery.ajax = (function(_ajax){

	var protocol 	= location.protocol,
		hostname 	= location.hostname,
		exRegex 	= RegExp(protocol + '//' + hostname),
		YQL 		= 'http' + (/^https/.test(protocol)?'s':'') + '://query.yahooapis.com/v1/public/yql?callback=?',
		query 		= 'select * from html where url="{URL}" and xpath="*" and compat="html5"';

	function isExternal(url) {
	
		return !exRegex.test(url) && /:\/\//.test(url);
	
	}

	return function(o) {
	
		var url = o.url;
	
		if (/get/i.test(o.type) && !/json/i.test(o.dataType) && isExternal(url)) {
	
			o.url 		= YQL;
			o.dataType 	= 'json';
			o.data 		= { q: query.replace('{URL}', url + (o.data ? (/\?/.test(url) ? '&' : '?') + jQuery.param(o.data) : '')), format: 'xml' };
	
			if (!o.success && o.complete) {
	
				o.success = o.complete;
				delete o.complete;
	
			}
	
			o.success = (function(_success) {
	
				return function(data) {
	
					if(_success) {
	
						// FAKE XHR CALLBACK
						_success.call(this, {
	
						responseText: (data.results[0] || '').replace(/<script[^>]+?\/>|<script(.|\s)*?\/script>/gi, '')
	
					}, 'success');
	
				}
	
			};
	
		})(o.success);
	
	}

    return _ajax.apply(this, arguments);

  };

})(jQuery.ajax);