function onloadWinOpen(){
	var node_a = document.getElementsByTagName('a');
		for (var i in node_a) {
			if(node_a[i].className == 'popup'){
				node_a[i].onclick = function() {
					return winOpen(this.href, this.rel)
				};
			}
		}
} ;

function winOpen(url, rel) {
	var split = rel.split(',') ;
	window.open(
	url,'popup',
	'width='+ split[0] +',height='+ split[1] +',toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=yes');

	return false;
};

if (window.addEventListener) { //for W3C DOM
  window.addEventListener("load", onloadWinOpen, false);
} else if (window.attachEvent) { //for IE
  window.attachEvent("onload", onloadWinOpen);
} else  {
  window.onload = onloadWinOpen;
}