var old_onload = function(){window.onload};

window.onload = function(){
	
	old_onload();
	var links = document.getElementsByTagName('a');
	for (var i = links.length - 1; i >= 0; i--){
		//alert('link');
		if(links[i].className == 'popup'){
			links[i].onclick = function(){window.open(this.href, 'Pop Up', "width=600px, height=600px, scrollbars=1"); return false;}
		}
	};
}