Sample Scriptable Plug-in
This page contains a testcase which demonstrates the work of
scriptable 4.x style Navigator plug-in with Mozilla. The example
plug-in occupies the area right below this text, and you should see a
frame the plug-in draws around its window. Below the plug-in window
there are two buttons. Clicking on the buttons will result in calling
native plugin methods from JavaScript. Show Version will instruct the
plug-in to retrieve the Mozilla user agent string and display it in
the plug-in window, Clear button will call plug-in method to erase the
window.