mozilla/pdf.js — pull request #2081 by eguitarz (2012-09-05 14:08:22+00:00)
Title: Fix sidebar display issue #2062

Fix sidebar display issue #2062, the issues is thumbnail / outline won't disappear after toggle the sidebar off. Only happen in Chrome / Safari.

[Test Steps]
1. Toggle the sidebar on in Chrome browser.
2. When the thumbnails has been rendered, toggle the sidebar off.
3. The thumbnails still exist there.