function formatLink(link)
{
  var res;
  var re = /http:\/\/(.*)/ig;
  res = link.replace(re, "$1");
  re = /\//g;
  return res.replace(re, "_");
}

function setLinkBehaviours()
{
    var Links = document.getElementsByTagName( 'A' );

    for( var i = 0; i < Links.length; i++ )
    {
        if (Links[i].href.indexOf(".zip")>=0 ) 
        {
       // alert(formatLink(Links[i].href));
          Links[i].onclick = function() {
            urchinTracker("/tracker/" + formatLink(this.href));
          }
        }
    }
}