validate کردن email address

[zhr.rezae66i]

ببینید این کدی که در پایین نوشتم رو میخام دقیقا اما برای من کار نمیکنه
من با php کار میکنم


<script type="text/javascript">
function AjaxFunction(email)
{
var httpxml;
try
{
// Firefox, Opera 8.0+, Safari
httpxml=new XMLHttpRequest();
}
catch (e)
{
// Internet Explorer
try
{
httpxml=new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e)
{
try
{
httpxml=new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e)
{
alert("Your browser does not support AJAX!");
return false;
}
}
}
function stateck()
{
if(httpxml.readyState==4)
{
document.getElementById("msg").innerHTML=httpxml.r esponseText;

}
}
var url="email-ajax.php";
url=url+"?email="+email;
url=url+"&sid="+Math.random();
httpxml.onreadystatechange=stateck;
httpxml.open("GET",url,true);
httpxml.send(null);
}
</script>


The HTML code to display the form ( as in the above demo ) is here


<form name=f1 action=''>
Your First Name <input type=text name=n1><br>
Any email address <input type=text name=email onBlur="AjaxFunction(this.value);"><div id="msg"></div>
<br>
Your City Name <input type=text name=city>
<input type=submit value=Submit >
<input type=hidden value=test name=todo>
</form>


Now the code kept within email-ajax.php file is here<?
$email=$_GET['email'];
echo $email;
if (!eregi("^[_a-z0-9-]+(.[_a-z0-9-]+)*@[a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,3})$", $email)){
echo "<font color=red> Invalid email</font>";
}else{
echo "<font color=green> Valid Email</font>";}
?>