expressionengine_affiliae_links.html

<a href="http://expressionengine.com/forums/viewthread/108855/">Link1</a> | 
<a href="http://expressionengine.com/">Link2</a> | 
<a href="http://expressionengine.comindex.php/?affiliate=newism&amp;page=/forums/viewthread/108855/">Link 3</a>
<a href="http://expressionengine.com">Link4</a>

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript" charset="utf-8">
	eeregexp = new RegExp("^(http://(www\.)?expressionengine\.com)");
	affiliateregexp = new RegExp("affiliate");
	affiliate = "newism";
	$('a').click(function() {
		if(this.href.replace(eeregexp) && !this.href.match(affiliateregexp))
		{
			this.href = this.href.replace(eeregexp, "$1/index.php?affiliate="+affiliate+"&page=");
		}
	});	
</script>