code: function(type, el, callback) {
              if (YAHOO.widget[type]) {
                  return new YAHOO.widget[type](el, callback);
              } else {
                  return null;
              }
          }
docs: Returns a ygAnim instance of the given type
  @method getAnim
  @param type {string} the type of animation
  @param el {HTMLElement} the element to element (probably the children div)
  @param callback {function} function to invoke when the animation is done.
  @return {YAHOO.util.Animation} the animation instance
  @static