// create lightbox2 image link and append it to document body
function createImageLink(arg_id, arg_href, arg_title) {
  //alert('createImageLink: arg_id=' + arg_id + ' arg_href=' + arg_href + ' arg_title=' + arg_title);

  var link       = document.createElement('a');
      link.id    = 'image_' + arg_id;
      link.title = arg_title;
      link.href  = arg_href;
      link.rel   = 'lightbox[album]';
      //link.appendChild( document.createTextNode('Image ' + arg_id) );

  document.body.appendChild(link);
}

// open lightbox for a particular image
function GroupDelegate(id) {
  var objLink = document.getElementById(id);
  Lightbox.prototype.start(objLink);
}