Telerik.Web.UI.RadContextMenu.prototype._onKeyDown = function (e) {

    if (!e.keyCode && !e.rawEvent) return;

    var item = this.get_focusedItem();
    var keyCode = e.keyCode ? e.keyCode : e.rawEvent.keyCode;
    var items = this.get_items();

    if ($(e.target).closest(".rmTemplate").length > 0) {
        return false;
    }

    if (keyCode === Sys.UI.Key.esc) {
        this._hide();
        return false;
    }

    if (!item) {
        switch (keyCode) {
            case Sys.UI.Key.up:
                var lastItem = items.getItem(items.get_count() - 1);

                if (lastItem.get_visible()) {
                    lastItem.focus(e);
                } else {
                    lastItem.focusPreviousItem(e);
                }
                break;

            case Sys.UI.Key.down:
                var firstItem = items.getItem(0);

                if (firstItem.get_visible()) {
                    firstItem.focus(e);
                } else {
                    firstItem.focusNextItem(e);
                }
                break;

            case Sys.UI.Key.enter:
                this._hide();
                break;
        }
        return false;
    }

    return this._keyboardNavigator._onKeyDown(e, item);
}