Ajax Image upload without refreshing the form

form

<form action="processupload.php" method="post" enctype="multipart/form-data" id="MyUploadForm">
  <input name="ImageFile" id="imageInput" type="file" />
  <input type="submit"  id="submit-btn" value="Upload" />
  <img src="images/ajax-loader.gif" id="loading-img" style="display:none;" alt="Please Wait"/>
</form>

JQuery- Ajax Form submission

$(document).ready(function() { 
    var options = { 
            target:   '#output', 
            beforeSubmit:  beforeSubmit,
            success:       afterSuccess,
            resetForm: true    
        }; 
       
     $('#MyUploadForm').submit(function() { 
            $(this).ajaxSubmit(options);             
                     return false; 
        }); 
});