function wopen(url, name, w, h)
{
var left = (screen.width/2)-(w/2);
var top = (screen.height/2)-(h/2);
w += 32;
h += 96;
 var win = window.open(url, name, 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=no, width='+w+', height='+h+', top='+top+', left='+left);
 win.resizeTo(w, h);
 win.focus();
}