I have a rather large DropDownButton menu, which at 1024x768 extends the full height of the screen. However, the items above and below the screen can't be reached without scrolling the entire screen. I seem to recall menus being scrollable, so they reach a particular height and then scroll. Is there some way to force this? I tried setting the actual dijit.Menu object to have a height of 80% and overflow:scroll, but it didn't help.