In a conversation with Cooluck, we came up with this idea.
Idea
Embed the most common JavaScript libraries directly into the browser, and let it update them from the repository. We don’t load our standard Java libraries when we download the applet.
findings
I appeal to Mozilla-maidens, who knows how / can help create even a similar extensin for FF? As far as I know, jQuery has SVN. I also think it is not a problem to ask the developers of other platforms to make repositories for their libraries.