function noSpam() 
{
 var a = document.getElementsByTagName("a");
 for (var i = a.length-1; i >= 0; i--) 
 {
  if (a[i].className.search(/\bemail\b/) != -1) 
  {
   var email = a[i].firstChild.data + "@" + a[i].lastChild.data;
   a[i].innerHTML = email;
   a[i].href = "mailto:" + email;
  }
 }
}