am 8d89f800: am 3f08740b: am 32b505d9: am 8e44ae9c: docs: fix IE6 bug in which tabs are not focusable while in the reference. also increase the minimum width for the header to avoid line-wrapping of the tabs.

Merge commit '8d89f800ceb04a726597779be845cc45090c8c46'

* commit '8d89f800ceb04a726597779be845cc45090c8c46':
  docs: fix IE6 bug in which tabs are not focusable