function openWin(html,name,width,height) {
	var wval=450;
        if (width) {
            wval = width;
        }
 	var hval=640;
        if (height) {
            hval = height;
        }
    var x=open(html,name,'width='+wval+',height='+hval+',location=yes,scrollbars=yes,menubar=no,status=yes,toolbar=no,resizable=yes');
	x.moveTo(((screen.width/2)-(wval/2)),((screen.height/2)-(hval/2)));
	x.focus(); //
    }