function openChromeless(sWin) {
	var winName = "win" + Math.round(Math.random()*1000);
	var sProps = "toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes"; 
	sProps += ",width=" + 540 + ",height=" + screen.height/2.5;// + ",top=" + nTop + ",left=" + nLeft; 
	var oWin = window.open(sWin, winName, sProps);
}