function apri(url,w,h){
   var l = Math.floor((screen.width-w)/2);
   var t = Math.floor((screen.height-h)/2);
    newwindow=window.open(url,"","left=10,top=10,toolbar=no,directories=no,menubar=no,width="+w+",height="+h+",top=" + t + ",left=" + l + ",resizable=yes,scrollbars=yes,location=no, status=no");
}