window.onload= function() {
if (!document.getElementById) return;
var poplink= document.getElementsByTagName('a');
for (var i=0;i<poplink.length;i++) {
if (poplink[i].getAttribute('rel') == 'popup') {
poplink[i].onclick= function() {
window.open(this.href, '', 'width=220, height=40, top=150, left=150');
return false;
}
}
}
}