Navbar dropdowns failing in IE<10 when bootstrap-theme.css included

Created by: jodytate

With bootstrap-theme.css included, navbar dropdowns fail to work in IE 8. (You can see a one-pixel line appear indicating they're attempting to work, however.)

Test case:

http://jodytate.github.io/bootstrap-dropdown-test/

(Neither jsfiddle or jsbin worked reliably in IE 8 so the best way to test was a standalone site.)