FormData AJAX jQuery Function

<script type="text/javascript">
// function used to make AJAX calls
function ajaxFormCall(event, formObject, successFunction, errorFunction) {
    var data = new FormData(formObject.get(0));
    event.preventDefault();
    $.ajax({ 
      data: data, 
      type: formObject.attr('method'),
      url: formObject.attr('action'),
      cache: false,
      processData: false,
      contentType: false,
      success: successFunction, 
      error: errorFunction
    });
    return false;  
} 
</script>