function openImagePage (imgurl, imgtitle)
{
  var options = 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=no';
  var pageurl = 'image.php';
  pageurl = pageurl + '?imgurl=' + escape(imgurl) + '&imgtitle=' + imgtitle;
  im_window = window.open(pageurl, 'imwindow', options);
  im_window.focus();
}