function popitup(url, wn, w, h){
	var win_features="status=0,scrollbars=1,resizable=1,toolbar=0,location=0,";
	if(!w) w = screen.width-200;
	if(!h) h = screen.height-200;
	if(!wn) wn = "Popup Window";
	var newwindow = window.open(url, wn, win_features + "width=" + w + ",height=" + h);
	newwindow.focus();
}