学步园

//Check Email Format
function CheckEmail(theform)
{
email=theform.rs_email.value;
if(email=="")
{
alert("邮箱地址不能为空！");
theform.rs_email.focus();
return false;
}
else
{
   var re = /^[\w.-]+@([0-9a-z][\w-]+\.)+[a-z]{2,3}$/i;  

    if(re.test(email))
    {
        return true;
    }
    else
    {
  alert("邮箱地址格式不正确！");
  theform.rs_email.focus();
        return false;
    }
}
}