$(document).ready(function() { 
    var options = { 
        target:        '#main-right',   // target element(s) to be updated with server response 
beforeSubmit:  Loading,  // pre-submit callback 

 //       beforeSubmit:  showRequest,  // pre-submit callback 
//        success:       showResponse  // post-submit callback 
 
        // other available options: 
        //url:       url         // override for form's 'action' attribute 
        //type:      type        // 'get' or 'post', override for form's 'method' attribute 
        //dataType:  null        // 'xml', 'script', or 'json' (expected server response type) 
        //clearForm: true        // clear all form fields after successful submit 
        //resetForm: true        // reset the form after successful submit 
 
        // $.ajax options can be used here too, for example: 
        //timeout:   3000 
    }; 
    // bind form using 'ajaxForm' 
    $('#myForm').ajaxForm(options); 
}); 

function Loading(formData, jqForm, options) { 
			$('#main-right').html('<br><br><br><br><br><center><img src="images/loading.gif" /></center>').fadeIn('slow');
    return true; 
}