Browser support for jar protocol

I've just discovered that jar protocol (jar:!/{entry}) is rarely supported by web browsers.
For testing I've used the link found accidentally on the web: jar:http://wiki.netbeans.org/wiki/attach/AutoupdateAPI/org-netbeans-modules-autoupdate-services.zip!/index.html.
MS IExplorer failed to open it.
The same was with Opera.
In fact the only browser that manager to open it was Firefox.
I also tried Konqueror. Just for fun. As you can guess, it don't support jar protocol too.