if (Telerik.Web.UI.RadMenuItem) {

    Telerik.Web.UI.RadMenuItem.prototype._doOpenContentTemplate = function (animationContainer) {
        var that = this,
            slide = that._slide;

        this.withView(function () { that.get_view()._ensureDecorationElements(); });

        // 1) Show animation container and hide visually
        animationContainer.style.display = "block";
        animationContainer.style.visibility = "hidden";

        // 2) Prepare the slide element
        that._resetAnimatedElementPosition();
        slide.set_direction(that._getSlideDirection());
        slide.set_animatedElement(that._getAnimatedElement());
        slide.updateSize();

        // 3) Position child container by calling the basic method, since there is no support
        //for screen boundary detection and scrolling when content template is used.
        var position = that._positionChildContainerBasic();


        that._adjustForScreenBoundaries(position.left, position.top)

        animationContainer.style.visibility = "visible";

        that._updateZIndex();

        slide.expand();
    }
}