run with firefox

[Antonio]

I have successful installed the last version of mapserver on my
SuSE9.1/Apache2 system.
I have a problem when attempt to use the index.html file of the demo
"whorkshop" with my Firefox browser.
The page is loaded correctly but when i click on "initialize", after the
modification of the fields requested inside the "index.html" file, my browser
try to download my mapserver file instead running the program.
Why?
Do you have any Ideas?
Thanks,
Antonio