var classN ="popup";
function windowPopup() {
	if (!document.getElementsByTagName) return false;
	var links = document.getElementsByTagName("a");
	for (var i=0; i < links.length; i++) {
		if (links[i].className.match(classN)) {
			links[i].onclick = function() {
				window.open(this.href);
				return false;
			}
		}
	}
}

try{
	window.addEventListener("load",windowPopup,false);
}catch(e){
	window.attachEvent("onload",windowPopup);
}