[IE] showblocks doesn't bring focus back to editor with shared toolbar

[Garry Yao]

1. On "sharedspaces" sample page, put the cursor inside editor;
2. Click on "Show Blocks" button;
   • Actual Result: Editor is not anymore focused.

[Jakub Ś]

This doesn't work under IE6 and IE7.

I has been working fine in IE8 and IE9 from CKE 3.4.3.