function CheckEmail(form) {
if ((document.SForm.RegEmail.value.length < 5)&&(1==1))
  {alert("Please enter a valid e-mail address!");
    document.SForm.RegEmail.focus();
    return false;}
if (window.RegExp)
{
re=new RegExp("^[^@]+@[^.]+\..+$");
if (!re.test(document.SForm.RegEmail.value))
   {alert("Please enter a valid e-mail address!");
    document.SForm.RegEmail.focus();
    return false;}
}
else
{
return true;
}
}