var Imtech = {};
Imtech.Thumbnails =
{
  attachLinks : function(galleryId, previewId)
  {
    var gallery = $(galleryId);
    var preview = $(previewId);
    
    if (gallery == null || preview == null)
    {
      return;
    }
    
    var links = gallery.getElementsByTagName("A");
    for (var i = 0; i < links.length; i++)
    {
      links[i].onclick = function() { return Imtech.Thumbnails.show(this, previewId); };
    }
  },
  
  show: function(img, previewId)
  {
    var preview = $(previewId);
    if (preview != null)
    {
      var previewImg = preview.getElementsByTagName("IMG")[0];
      var imgImg = img.getElementsByTagName("IMG")[0];
      previewImg.src = imgImg.src;
      previewImg.alt = imgImg.alt;
      return false;
    }
  }
};

function $(id)
{
  return document.getElementById(id);
}