// JavaScript Document
  function validateEmail(src) 
  {
  emailReg = "^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[a-zA-Z]$"            
  var regex = new RegExp(emailReg);            
  if(regex.test(src) == false)
  {                 
  alert('Please enter a valid email address and try again!');                 
  document.frmEmailList.txtEmail.value = ""                 
  document.frmEmailList.txtEmail.focus();                 
  return false;            
  }            
  return regex.test(src);  }