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;