migrate jQuery old code to 1.9 version
<p>I have a jQuery code about ajaxform written in a old version (1.4 i think) it work fine but i want to rewrite it in newer version (1.9) without including jquery-migrate, what shold i change in this code, help me please</p>

<pre><code>&lt;script&gt;
// prepare the form when the DOM is ready 
$(document).ready(function() { 
    var options = { 
        target:        '#targetDiv',  
        beforeSubmit:  showRequest, 
        success:       showResponse 

    }; 

    // bind form using 'ajaxForm' 
    $('#countyForm').ajaxForm(options); 
}); 

// pre-submit callback 
function showRequest(formData, jqForm) { 

 var extra = [ { name: 'ajax', value: '1' }];
 $.merge( formData, extra)
    return true;  
} 

// post-submit callback 
function showResponse(responseText, statusText)  { 

} 

 $("#loading img").ajaxStart(function(){
   $(this).show();
 }).ajaxStop(function(){
   $(this).hide();
 });
&lt;/script&gt;
</code></pre>
