var Convert = {
   initialize: function() {
       var spans = document.getElementsByTagName("span");
       for (var i = 0; i < spans.length; i++) {
        if(spans[i].getAttribute("class") == "address") {
          string = spans[i].childNodes[0].nodeValue;
          email = string.split("_")[0] + "@" + string.split("_")[2];
          spans[i].innerHTML = '<a href="mailto:' + email + '">' + email + '</a>';
      }
      }
   }
  }
 window.onload = Convert.initialize;