On This side when you apply a mouse over a menu bar (Without Click) the menu opens a sub selection. But your browser will not Open a Sub Menu. And by clicking on it will not open the sub menu it has it's own function.
When selecting from Edit/Preferences/Privacy/Browser ID - MSIE and then refresh will not show that menu bar at all.
That could be with other Sides that use this type of mouse selection.
http://www.ruihehang.com/myie2/html_en/home.htm
That would be other side.