RH 10 Webhelp: TOC, Search, and Index does not work with Firefox 35.0

The Webhelp generated from RH10 does not work properly.

Issues arise while opening it with Firefox 35.0 . The left pane does not appear.

Earlier issues were there while opening it with Chrome, but i resolved it and now the help is working fine with Chrome.

Firefox issue is still not resolved. Please, provide a solution for this.