HTML5 output in Firefox 3 on Linux/Unix systems

Hello,

I am developing an online help file for the company I am working for. After talking with the developers (who use Linux systems) they requested html files as the help file output. I decided to use the HTML5 output but only export the desktop version (mainly because we would like to have mobile versions eventually). When I brought my test file to the developers the html pages would load including all the styling in the css, but the TOC would not. I have been searching the forums trying to find an answer but I haven't found any. I found one post in the forums under Webhelp for Linux systems that suggested that the poster's problem could be an encoding issue. So I also made sure the output used the encoding "Unicode (UTF-8 without BOM)", but the TOC still would not load.

On the developer's Linux systems they use the Firefox browser version 3.0.12 which cannot be upgraded. The add-on Firebug has not been installed on their systems. If I view the ouput on my machine (windows 7 64-bit) in Firefox 23 it looks fine, but in version 3.0.12 the TOC will not load. So I believe it has something to do with the browser version of Firefox.

Is there a work around?

Any ideas or suggestions would be greatly appreciated. Thank you in advance!

-Katie