function popupOpenEx(url, x, y, cx, cy) {
	popup = window.open(url, 'popup'+cx+'_'+cy, 'alwaysRaised=yes,width='+cx+',height='+cy+',screenX='+x+',screenY='+y+',top='+y+',left='+x+',outerHeight='+cx+',outerWidth='+cy+'');
	popup.focus();
}

function popupOpen(url, cx, cy) {
	var xOffset = (screen.availWidth - cx) / 2;
	var yOffset = (screen.availHeight - cy) / 2.3;
	popupOpenEx(url, xOffset, yOffset, cx, cy);
}