Mac Forum / Applications / Firefox / Mozilla

I got a problem with the following page when it's viewed on FF+Mac:
http://www.bedarraisland.com/ -
The page is shown fine in any other browser.
Unfortunately I don't have a Mac next to me at this mement, so I am

I need help on how I can write plugin for MAC Browsers FireFox and Safari.
Need to use NPAPI (Gecko SDK) in order to build the Plugin.
Step by Step plugin writing help needed. (Xcode + NPAPI)
Regards,