Event.observe(window, 'load', function() {
   //$A($('productThumbnails').getElementsByTagName('a')).each(function(a) {
$A($('productThumbnails')).each(function(a) {
      Event.observe(a, 'click', function(e) {
         Event.stop(e);
         
         $('productPreviewArea').ImageLoader.loadImage(a.href);
         
         var newDesc = (a.childNodes[0] && a.childNodes[0].tagName) ? a.childNodes[0].getAttribute('alt') : '';
         $('zoomDescription').fulldesc = newDesc;
         $('zoomDescription').update('<p>' + newDesc.truncate(20) + '</p>');
         
         var zoomLink = $('zoomImageLink');
         zoomLink.alt = newDesc;
         zoomLink.href = a.getAttribute('zoom');
         
         if(!zoomLink.href || zoomLink.href == '') zoomLink.style.visibility='hidden'; else zoomLink.style.visibility='';
      });
   });
});