FireFox hangs on executing a Javascript. Help!!!

Hi everybody!
Please, help me to cope with a bug in FireFox.

I have prepared example of Online Help ([url]http://yshindin.narod.ru/Help/testhelp/Output/CHM_html_start.htm[/url]). Before running, enable cookies in FireFox.
Load the Help page in FireFox, click the Favorites link. The System will display the “No Favorite topic found” message. Click Contents or Index – everything works.

Now, download the Help to your local drive from [url]http://yshindin.narod.ru/Help/testhelp/Output/testhelp.zip[/url]. Unzip and do as follows.
1. Load the Help from the CHM_html_start.htm page.
2. Click Favorites. The System displays “No Favorite topic found” (but note – the font is different)
3. Click Contents (or Index). The browser hangs.

If I look into the JavaScript console, I see the message:
Error: uncaught exception: [Exception… “Component returned failure code: 0x80520001 (NS_ERROR_FILE_UNRECOGNIZED_PATH) [nsIDOMLocation.href]” nsresult: “0x80520001 (NS_ERROR_FILE_UNRECOGNIZED_PATH)” location: “JS frame :: javascript:parent.contents.location.href=’CHM_frame_toc.htm’;parent.main.location.href=’home.htm’;parent.menu.document.searchform.searchtext.value = ”; :: <TOP_LEVEL> :: line 1″ data: no]

What can I do here?

Regards,
Yuri Shindin

e-mail: [email][email protected][/email]

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