delay drop down menu

Hi Sakin, Is it possible to influence the speed of the drop down menu? Now when we remove our mouse from the menu, it immediately disappears. So if you point your mouse wrong accidentally, then you've lost the menu. We would like it to be so, that if you remove your mousepointer from the menu, the menu still stays visible for a few seconds. And is it also possible to make the drop down menus a little 'see-through' (don't know what the proper term is).