help menu don't work

Hello from France!

I use windows seven and when I launch Arduino software, everything seems to work.
In the Help menu, I have all the Items, but when I click on "reference" or whatever, nothing happend.
I have checked, I have the "reference" directory with all the files as html files on my computer.
I use Firefox as navigator.

Any idea ?

Just open the files in your web browser.

Thank's for you reply,
Yes, it is what I do, to read the pages, but I wonder why it doesn't work as it should.

Have you checked to see if you have popups blocked in your browser?

Yes, the popups aren't blocked.

Thank's for your help.