code: function() {
              if (!this.parent) {
                  Kinetic.Util.warn('Node has no parent. moveUp function is ignored.');
                  return;
              }
              var index = this.index,
                  len = this.parent.getChildren().length;
              if(index < len - 1) {
                  this.parent.children.splice(index, 1);
                  this.parent.children.splice(index + 1, 0, this);
                  this.parent._setChildrenIndices();
                  return true;
              }
              return false;
          }
docs: move node up
  @method
  @memberof Kinetic.Node.prototype
  @returns {Boolean}