Ajax contact form not working - php

Question

I am working on a website with an Ajax contact form. Tried a lot, it successfully sends a mail without headers below is my code please help me to fix this
code
<div class="form">
<div class="title">
<h2 class="orange"><span class="orange">Contact</span> US</h2>
</div>
<div class="height15"></div>
<div id="return_message"></div>
<div class="field">
<label>First Name:</label>
<input name="name" type="text" />
</div>
<div class="field">
<label>Phone Number:</label>
<input name="phone" type="text" />
</div>
<div class="field">
<label>Email Address:</label>
<input name="email" type="text" />
</div>
<label>Message:</label>
<textarea name="message" cols="" rows=""></textarea>
<div class="clear"></div>
<a class="org_btn more submit" id="submit" href="#.">Submit</a> </div>
<script language="javascript">
$(document).ready(function() {
$("#menu_btn").click(function(){
$("#sub_menu").slideToggle("slow");
});
//Contact us form validation
$('#return_message').hide();
$('#submit').click(function(event){
var name = $('#name').val();
var phone = $('#phone').val();
var email = $('#email').val();
var message = $('#message').val();
if( (name=='') || (phone=='') || (email=='') || (message=='') )
{
$('#name').addClass('error_active');
$('#phone').addClass('error_active');
$('#email').addClass('error_active');
$('#message').addClass('error_active');
}
else
{
var regex = /^([a-zA-Z0-9_\.\-\+])+\#(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if(!regex.test(email))
{
alert("Please Enter valid email address");
$('#email').addClass('error_active');
}
else
{
$.ajax(
{
type: 'POST',
data: ({name : name, phone : phone, email : email, message : message}),
url: 'send_mail.php',
success: function(data)
{
if(data)
{
$('#return_message').show('slow').html("<p>Email has been sent...</p>");
$('#name').val('');
$('#phone').val('');
$('#email').val('');
$('#message').val('');
$('#name').removeClass('error_active');
$('#phone').removeClass('error_active');
$('#email').removeClass('error_active');
$('#message').removeClass('error_active');
}
else
{
$('#return_message').show('slow').html("<p>Email has not been sent...</p>");
}
}
});
}
}
});
});
</script>
php code
<?php
$name = $_POST['name'];
$email = $_POST['email'];
$phone = $_POST['phone'];
$message = $_POST['message'];
$to = "info#kodspider.com"; // Please put your email addres.
$subject = "Marthoman Vidyapeedom"; //Please put subject of your email.
if($phone!='')
{
$message2 = $message.'\r\nPhone:'.$phone;
}
else
{
$message2 = $message;
}
$message = $message.'\r\nPhone:'.$phone;
$headers = "From: ".$email;
$sent = mail( $to, $subject, $message2, $headers );
if($sent)
{
echo "success";
}
else
{
echo "error";
}
?>

Answer 1

you have given
<input name="name" type="text" />
but in jquery your calling
$('#name').val('')
in jquery # selector is used only for id
make change
<input name="name" id="name" type="text" />
for more details in jquery read this