function openWin(tURL,tHeight,tWidth,tbar){
	var z;
	z=window.open(tURL,null,"height=" + tHeight + ",width=" + tWidth + ",scrollbars=" + tbar + ",toolbar=0,location=0,directories=0,status=0,menubar=0,scrolling=1,resizable=0,top=50,left=20");
}