Требуется помошь Ошибка в JS

(function($) {
	var Utility = function() {
	/**
	 * Local reference to network status
	 * 
	 * @access private
	 * @var Boolean
	 */
	var networkStatus;
	
	/**
	 * Check network status and manage application cache forced refresh
	 * 
	 * @access public
	 * @return Boolean
	 */
	this.checkNetworkStatus = function() {
		// Only check status and optional refresh if application cache and local storage are supported
		if(!Modernizr.applicationcache || !Modernizr.localstorage || !rvzrOfflineCache) {
			return false;
		}
		
		// Try to detect if are online/offline through a more reliable async request
		$.ajax({
			type: 'POST',
			url: rvzrBaseURI + "index.php?option=com_responsivizer&task=dummycontroller.dummytask",
			async: true,
			success: function(data, textStatus, jqXHR){
				// Store existing status
				var previousStatus = localStorage.getItem('networkStatus');
				networkStatus = true;
				localStorage.setItem('networkStatus', networkStatus);
				// If we was offline it's the moment to force a refresh to get now fresh cache resources
				if(previousStatus === 'false') {
					// Browser downloaded a new app cache.
					window.location.reload();
				}
			},
			error: function(jqXHR, textStatus, error){
				networkStatus = false;
				localStorage.setItem('networkStatus', networkStatus);
			}
		}); 
	}}})(jQuery); // мало скобок и дописать чутка

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