function wopenat(url, name, height, width, lef, top) 
{
	var str = "height=" + height + ",innerHeight=" + height;
	str += ",width=" + width + ",innerWidth=" + width;
	str += ",left=" + lef + ",screenX=" + lef;
	str += ",top=" + top + ",screenY=" + top + ",scrollbars=yes,resizable=yes";
	return window.open(url, name, str);
}