/**
	 * Load the requirements and return a formfield to the template. Ensure "multi" is on.
	 *
	 * @return UploadifyField
	 */
	public function FieldHolder() {
		$f = parent::FieldHolder();
		if($this->Sortable()) {
			Requirements::javascript('dataobject_manager/javascript/dom_jquery_ui.js');
			Requirements::css('dataobject_manager/css/dom_jquery_ui.css');
		}
		$this->setVar('multi',true);
		return $f;
	}
 /**
  * Load the requirements and return a formfield to the template. Ensure "multi" is off.
  *
  * @return UploadifyField
  */
 public function FieldHolder()
 {
     $f = parent::FieldHolder();
     $this->setVar('multi', false);
     return $f;
 }