jQuery = jQuery.noConflict();

function showImg(el, url) 
{
   document.getElementById('overlay').style.display = 'block';
   document.getElementById('img').src = url;
   el.onmouseout = function() 
               { 
                  document.getElementById('img').src = '_images/spacer.gif';
                  document.getElementById('overlay').style.display = 'none';
               };
}