When I submit my form, I get an the "You must write a message" echo from the PHP code, and I also get the error message from the ajax. I don't need the PHP echo messages because I have the ajax messages. Can't figure out the problem.

I would like to only use the ajax messages.

Here is the ajax:
Code:
$(function(){

$("#btnSend").click(function(){

$.ajax({type:'POST', url: './php/mailer.php', data:$('#frmContact').serialize(), success: function(response) {
$("#spanMessage").html('Please Wait...');


	 if(parseInt(response)>1)
	   {
		 $("#spanMessage").html('<div class="alert alert-success"><button type="button" class="close" data-dismiss="alert">&times;</button><strong>Well done!</strong> Your message has been sent.</div>');
	   }
	   else{
		 alert(response);
		 $("#spanMessage").html('<div class="alert alert-error"><button type="button" class="close" data-dismiss="alert">&times;</button><strong>Error! </strong> Somthing Wrong</div>');
	   }
	   
		 
}});


});
Here is the PHP:
PHP Code:
<?php session_start();
if(isset(
$_POST['Submit'])) {
$youremail 'wjordan1987@gmail.com';
$fromsubject 'Test Email';
$txtName $_POST['txtName'];
$txtEmail $_POST['txtEmail'];
$txtSubject $_POST['txtSubject']; 
$txtText $_POST['txtText']; 
$to $youremail
$mailsubject 'Masage recived from'.$fromsubject.' Contact Page';
$body $fromsubject.'

The person that contacted you is  '
.$txtName.'
 E-mail: '
.$txtEmail.'

 Message: 
 '
.$txtText.'

|---------END MESSAGE----------|'

echo 
"Thank you fo your feedback."
                            
mail($to$subject$body);
 } else { 
echo 
"You must write a message."
}
?>
Here is the HTML form:
HTML Code:
<form action="" method="post" id="frmContact">
<h5>Whats your Name?</h5>
<input name="txtName" type="text" class="txbx" value="Name" /><br />
<h5>Whats your Email?</h5>
<input name="txtEmail" type="text" class="txbx" value="Email" /><br />
<h5>Email Subject?</h5>
<input name="txtSubject" type="text" class="txbx" value="Subject" /><br />
<div class="erabox">
<h5>Message to us</h5>
<textarea name="txtText" cols="" rows="" class="txbx era" value="Message" ></textarea><br />
<input name="Submit" type="button" class="sendbtn" value="Send Message" align="left" id="btnSend"/>
</form>