Script checks for user group Adfly

[shanef]

Hello i have been thinking about incorporating Adfly into my forum and i was wondering if there was a way for this small script (pasted below) to check and run for only certain user groups. i have some members that have donated to the forum and i would like for them not to have the hassle of dealing with it. I dont if there is some sort of code that could be added but if anyone has any ideas I would be greatfull

<script type="text/javascript">
onmousemove = function adfly() {
adfly_id = '1409766'; //replace with your ID
for (var i = 0; i < document.links.length; i++) {
var hrefer = document.links[i].href;
if(hrefer.match("adf.ly") || hrefer.match("http://www.mobilephonetalk.com")|| hrefer.match("http://www.symbiantalk.net/")) {
document.links[i].href = document.links[i].href;
}else{document.links[i].href = 'http://adf.ly/' + adfly_id + '/' + document.links[i].href;}
}
}
</script>