First you put in the <head> this code :
<SCRIPT LANGUAGE=”JavaScript”>
//Begin
function popUp(URL) {
day = new Date();
id = day.getTime();
eval(“page” + id + ” = window.open(URL, ‘” + id + “‘, ‘directories=0,titlebar=0,toolbar=0,location=0,status=0,toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=1,width=400,height=300,left = 650,top = 375’);”);
}
// End
</script>
Then in your body (where you wanted to put your link :
<div class=”if you want one”>Text of the link (or anything ealse</div>
Hope will help