Javadoc incremental search for Mozilla Firefox and Google Chrome.
When viewing Javadocs, this script replaces the package and class frames with a single search frame that allows searching incrementally through all packages and classes at once.
This is achieved with client-side Javascript, so it will work on any local or remote Javadoc page.
To have this extension apply to file:// URLs, open the about:config page and set greasemonkey.fileIsGreaseable to true.
Install Google Chrome extension
To have this extension apply to file:// URLs, configure it from the chrome://extensions/ page.