Question on a piece of scripting.

<script>
function utmx_section(){}function utmx(){}
(function(){var k='3577246329',d=document,l=d.location,c=d.cookie;function f(n){
if(c){var i=c.indexOf(n+'=');if(i>-1){var j=c.indexOf(';',i);return 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'
+'/siteopt.js?v=1&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>utmx("url",'A/B');</script>

<script type="text/javascript">
if(typeof(_gat)!='object')document.write('<sc'+'ript src="http'+
(document.location.protocol=='https:'?'s://ssl':'://www')+
'.google-analytics.com/ga.js"></sc'+'ript>')</script>
<script type="text/javascript">
try {
var pageTracker=_gat._getTracker("UA-498192-5");
pageTracker._trackPageview("/3577246329/test");
}catch(err){}</script>

<img src="http://media.fastclick.net/w/tre?ad_id=20247;evt=12939;cat1=14170;cat2=14171" width="1" height="1" border="0">
<img src="https://secure.fastclick.net/w/tre?ad_id=20247;evt=12939;cat1=14170;cat2=14171" width="1" height="1" border="0">