Note since Webconverger 11 you can switch these options from the boot command line.
iceweasel-webconverger
Default and most common.

iceweasel-webcnoaddressbar
Customization option. For customers who want patrons to browse, but not enter in URLs.

boot option webcchrome=noaddress
iceweasel-webcfullscreen
Customization option. For customers who want to do Digital signage or just show off some pictures somewhere.

If you're concerned about the scroll bar, alter the overflow CSS element.
boot option webcchrome=fullscreen
Implementation
We have forked rkiosk and created our own extension, (iceweasel-)webconverger. We had to do this as I had to modify some of upstream's packaging and functions. Upstream was also a little un-cooperative.
BrowserLoadURL broken
Overriding BrowserLoadURL in this kiosk extension was use to stop access to:
- file://
- about:
- resource:
File browsing is not really a security problem, though some people perceive it to be, therefore file:// should be disallowed.
BrowserLoadURL does not work in Firefox 3.5
This issue has been raised on mozillazine, however the fixes involve hacking browser.jar instead of overriding it with browser.xul, as what extensions should be doing. The final suggestion of fixing the local file browsing issue elegantly with CSS with:
@-moz-document url-prefix(file://) {
html > body { visibility: hidden !important;
}
Does not work in my tests. 
https://bugzilla.mozilla.org/show_bug.cgi?id=524951
Disabling keys
Keys combinations like CTRL+G, CTRL+J, CTRL+K, CTRL+L, and ALT+D, can be used to get to Google in webcnoaddressbar & webcfullscreen.
Dorando proposes:
var keys = ["key_findAgain", "key_openDownloads", "key_search", "focusURLBar", "focusURLBar2"];
for(var i = 0; i < keys.length; i++) {
var key = document.getElementById(keys[i]);
if(!key)
continue;
key.setAttribute("key",""); key.removeAttribute("charcode"); key.removeAttribute("keycode");
var menuitems = document.getElementsByAttribute("key",key.id);
for(var j = 0; j < menuitems.length; j++) {
menuitems[j].setAttribute("acceltext","");
menuitems[j].removeAttribute("acceltext");
}
}
var keyset = document.getElementById("mainKeyset");
keyset.parentNode.insertBefore(keyset, keyset.nextSibling);
You can also just set the disabled attribute on the
These patch needs to be introduced into https://github.com/Webconverger/iceweasel-webconverger
Test the extension on your Firefox browser
This will lock down the browser and you'll need to use the firefox --safe-mode to remove it.
The best way of installing and removing this extension is with:
deb http://debian.webconverger.com/ squeeze/
deb-src http://debian.webconverger.com/ squeeze/
in your /etc/apt/sources.list and the apt-get install iceweasel-webconverger on a Debian machine.
Slideware
"iceweasel-fullerscreen" is the name of the package of Daniel Glazman's FullerScreen extension. It is good particularly for slideshows, though not digital signage as 'FullerScreen' does not allow Flash movies to go fullscreen.
Further Links
- Ubufox - Ubuntu's custom kiosk modifications
- Another kiosk wiki
- Kiosk browser extension
- Bugzilla kiosk related bugs
- del.icio.us links
- GNU Kiosk
- rkiosk
- public fox