User made protocols

In the OS/2 version of Firefox it is possible to use Firefox as a tv 
interface, where a webpage with pictures can link to and open various 
programs on the computer.

It is done by making user made protocols like the following in prefs.js:

user_pref("applications.photo", "c:\\programs\\photo.exe");
user_pref("applications.photo.parameters", "%url%");

A link like <a href="photo:">photo</a> will open the program, and <a 
href="photo:myphoto.jpg">my photo</a> will open myphoto.jpg in the photo 
program.

Is there any way to make this work in the Windows version of Firefox?

Or is there any other way to open programs from a (local) webpage?

Regards
Kim Ludvigsen