Online manual left frame does not work in Firefox

I have reported this bug to Firefox after version 1.07 which is the last version that works. They have no reply for me and no fix either. So I use IE to do that. I have been using Firefox for several years and it is time for me to dump that as they have lots of bad bugs and they cannot fix like session variable leak (All Netscape class browser will have session variables leak). When I reported the bug they said it is a feature. So, when you open two instances of the same application like managing multiple accounts in the ISP's site, the info entered/submitted will be leaked to the other one - pretty scarely. IE has no such problem. NDoc is a very popular tool to general .chm and .html help files. Also, using Firefox, you'll see a lot of advertising sites at the bottom of the browser and it timed out very frequently.

Frank