function OpenPopup2(url)
{
    window.open(url,'page','toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no,width=600,height=400');
}

var win = null;
function OpenPopup(mypage,myname,w,h,features) {
  var winl = (screen.width-w)/2;
  var wint = (screen.height-h)/2;
  if (winl < 0) winl = 0;
  if (wint < 0) wint = 0;
  var settings = 'height=' + h + ',';
  settings += 'width=' + w + ',';
  settings += 'top=' + wint + ',';
  settings += 'left=' + winl + ',';
  settings += features;
  win = window.open(mypage,myname,settings);
  win.window.focus();
}