AJAX/JS: Grabbing multiple input fields without refresh or button click and php echoing the value
===

I am currently using Ajax/JS to submit a form without a page refresh or button click. I have set a timer with `keyup` to trigger the function. I have tested it with one input field and works well but now that other input fields have been added I am getting no results echoed out by the PHP. I have checked with firefox bug tool and the results are being stored. I am not sure if this a JS or PHP issue.

How can I properly echo the value of input field after the user has stop typing? [EXAMPLE][1]

**JS/AJAX**

    <script>
    $(document).ready(function() {
      var timer = null; 
      var dataString;   
         function submitForm(){
    	$.ajax({ type: "POST",
    	url: "index.php",
    	data: dataString,
    	success: function(result){
    	$('#special').html('<p>' +  $('#resultval', result).html() + '</p>');}
                                      });
    			   return false;
    			 }
              $('#contact_form').on('keyup', function() {
    	clearTimeout(timer);
    	timer = setTimeout(submitForm, 2000);
    	var name = $("#contact_name, #email, #phone, #address, #website").val();
    	dataString = 'name='+ name;
    			 });
    			 }); 
    </script>



**HTML/PHP Snippet**

    <form action="" method="post" enctype="multipart/form-data" id="contact_form" name="form4">
     <div class="row"> 
      <div class="label">Contact Name *</div> <!-- end .label -->
        <div class="input">
          <input type="text" id="contact_name" class="detail" name="contact_name" value="<?php echo isset($_POST['contact_name'])? $_POST['contact_name'] : ''; ?>" /> 
          <div id="special"><span id="resultval"><? echo $_POST['contact_name'];  ?></span></div>
        </div><!-- end .input-->
     </div><!-- end .row -->
    					
     <div class="row"> 
      <div class="label">Email Address *</div> <!-- end .label -->
       <div class="input">
        <input type="text" id="email" class="detail" name="email" value="<?php echo isset($_POST['email'])? $_POST['email'] : ''; ?>" /> 
        <div id="special"><span id="resultval"><? echo $_POST['email'];  ?></span></div>
       </div><!-- end .input-->
     </div><!-- end .row -->


  [1]: http://webprolearner2346.zxq.net/TabsNextPrev/index.php