inject Lock and Unlock text Hide/show Lock/Unlock options
function() {
        var me = this;
        me.lockedGrid.headerCt.getMenuItems = me.getMenuItems(me.lockedGrid.headerCt.getMenuItems, true);
        me.normalGrid.headerCt.getMenuItems = me.getMenuItems(me.normalGrid.headerCt.getMenuItems, false);
        me.lockedGrid.headerCt.showMenuBy = Ext.Function.createInterceptor(me.lockedGrid.headerCt.showMenuBy, me.showMenuBy);
        me.normalGrid.headerCt.showMenuBy = Ext.Function.createInterceptor(me.normalGrid.headerCt.showMenuBy, me.showMenuBy);
    }