How to handle any links

i want to know who clicked on my links inside <div> tag./who = registered user/
i tryed following

[code=html]<script type=”text/javascript”>
function linkhandler(usr){
var TgVar = document.getElementsByTagName(‘a’)[0].onclick;
if(TgVar){
window.open(‘http://www.mysite.net/index.php?usr’);
//alert(TgVar);
}
}
</script>
<div onclick=”linkhandler(‘user name’);”>
<a>link</a>
<a>link</a>
<a>link</a>
<a>link</a>
</div>[/code]

Please help me

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