Script for injecting Google A/B testing into multiple pages. Could be extended in any number of ways.

gistfile1.txt

<script type="text/javascript">
  
	var abtestValue = "", runTest = false;
	var windowLocation = window.location.pathname;
	var mapArr = new Array();

	mapArr.push({ "url" : "/url.html", "id" : "99999999-99" });
	mapArr.push({ "url" : "/url.html", "id" : "99999999-99" });
	mapArr.push({ "url" : "/url.html", "id" : "99999999-99" });
	mapArr.push({ "url" : "/url.html", "id" : "99999999-99" });
	mapArr.push({ "url" : "/url.html", "id" : "99999999-99" });
	mapArr.push({ "url" : "/url.html", "id" : "99999999-99" });
	mapArr.push({ "url" : "/url.html", "id" : "99999999-99" });
    
	$.each(mapArr, function(i) {
		if (this.url === windowLocation) {
			abtestValue = this.id;
			runTest = true;
			console.log('Running Google Analytics A/B Test Using ID: ' + abtestValue);
		}
	});

	if (runTest === true) {

		var _udn = "domain.com";
  		<!-- Google Analytics Content Experiment code -->
		function utmx_section(){}function utmx(){}(function(){var
		k=abtestValue,d=document,l=d.location,c=d.cookie;
		if(l.search.indexOf('utm_expid='+k)>0)return;
		function f(n){if(c){var i=c.indexOf(n+'=');if(i>-1){var j=c.
		indexOf(';',i);return escape(c.substring(i+n.length+1,j<0?c.
		length:j))}}}var x=f('__utmx'),xx=f('__utmxx'),h=l.hash;d.write(
		'<sc'+'ript src="'+'http'+(l.protocol=='https:'?'s://ssl':
		'://www')+'.google-analytics.com/ga_exp.js?'+'utmxkey='+k+
		'&utmx='+(x?x:'')+'&utmxx='+(xx?xx:'')+'&utmxtime='+new Date().
		valueOf()+(h?'&utmxhash='+escape(h.substr(1)):'')+
		'" type="text/javascript" charset="utf-8"><\/sc'+'ript>')})();
		
	}

</script>

<script type="text/javascript">
  utmx('url','A/B');
</script>