function showDropDown(scope, element, opts) {
        if (opts.parent !== element.parent()) {
          element.parent().attr('aria-owns', element.find('md-content').attr('id'));
        }

        opts.parent.append(element);

        return $q(function(resolve, reject) {
          try {
            $animateCss(element, {removeClass: 'md-leave', duration: 0})
              .start()
              .then(positionAndFocusMenu)
              .then(resolve);

          } catch (e) {
            reject(e);
          }
        });
      }
Attach the select DOM element(s) and animate to the correct positions and scale.