gistfile1.js

		function getParameterByName(name) {
			var match = RegExp('[?&]' + name + '=([^&]*)').exec(window.location.search);
			return match && decodeURIComponent(match[1].replace(/\+/g, ' '));
		}

		function terminateRendering() {
			document.write('');
			try {
				window.stop()
			} catch (e) {
				try {
					document.execCommand('Stop')
				} catch (e) {
				}
			}
		}

		var td_campaign_id = 'cVGsuPwvxjoFkfk21';
		var direct_campaign_url = '//servedby.trackingdesk.com/' + td_campaign_id;
		if(document.referrer) {
			direct_campaign_url += '?Ref=' + document.referrer;
		}
		var event_id = getParameterByName('event_id');
		if(!event_id)
		{
			terminateRendering();
			document.location = direct_campaign_url;
		}