Fixes #10946.  This was a preexisting IE-only problem that no one noticed until the additional test cases were added.  If focus was in a ComboBox and you click the down arrow, then focus was lost which is a bug.  I fixed this by assigning focus in a setTimeout since focus cannot be set in a mousedown event handler.  Even if focus was restored, then pressing more/previous menu options again removed focus.  I added a focus call in the handler for those 2 menu items.
Fixes #10946.  This was a preexisting IE-only problem that no one noticed until the additional test cases were added.  If focus was in a ComboBox and you click the down arrow, then focus was lost which is a bug.  I fixed this by assigning focus in a setTimeout since focus cannot be set in a mousedown event handler.  Even if focus was restored, then pressing more/previous menu options again removed focus.  I added a focus call in the handler for those 2 menu items.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@22622 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful