function openWindow(url,w,h,s) {
	//now pop window
	var jWide = w
	var jTall = h
  var popWin = window.open(url, "PopWin", "height="+jTall+",innerHeight="+jTall+",width="+jWide+",innerWidth="+jWide+",menubar=no,toolbar=no,location=no,status=yes,scrollbars="+s+",resizable=no");
	sWide = (screen.availWidth-jWide)/2
	sTall = (screen.availHeight-jTall)/2
	popWin.moveTo (sWide,sTall);
}