What's wrong with my xanga tracker? Options

[RockStar0223]

I have some problem about my xanga tracker.
I put it on the web stat but it doesn't work.

Here's my xanag tracker code. ↓

<!-- begin code provided by createblog.com --><br /> <script type='text/javascript'><br />var xanga = "chris_crazy";<br />var from_url = escape(document['referrer']);<br />var links = document.getElementsByTagName('a');<br />for (var i=0; i<links.length; i++) {<br />if (links[i].href.match('http://www.xanga.com') && links[i].innerHTML.match('xanga') && (links[i+2].href.match('/logout.aspx') || links[i+2].href.match('/signin.aspx'))) {<br />document.write('<img src="http://www.vitason.org/xangalogger/process.php?xanga='+xanga.toLowerCase()+'&visitor='+links[i+1].innerHTML.toLowerCase()+'&url=' + document.location+'&ref='+from_url +'" width="0" height="0">');<br />}<br />} <br /></script><br /><!-- end code provided by createblog.com -->