Thanks to mathowie over on the 405 now I have similar functionality for Windows Internet Explorer users. Since the ArtLungSidebar is mostly for me, that makes me happy! The code is simple:
_search=open('http://www.example.dom/sidebar.html','_search') where the first parameter is the URL of whatever you want to cram into the MSIE search pane. I wrapped it in a function for simplicity. Read more about the
_search target. Nifty.