function popup(str,w,h) {
	var le = (screen.availWidth - w) /2;
	var he = (screen.availHeight -h+10) /2;
        searchWin = window.open(str,'NewWin','scrollbars=yes,resizable=no,width='+w+',height='+h+',left='+le+',top='+he+',status=no,location=no,toolbar=no');



}