I used the toolbar button code provided to create a tinyurl button on the toolbar of my browser (Bon Echo [Firefox] on Damn Small Linux [DSL]).
Unfortunately, bookmarks that contain Javascript code for the URL do not automajickally bring in the correct favicon image, so I had to fiddle with it a bit. Here is a link to a screenshot of my browser with the tinyurl "make tinyurl" button installed:
http://tinyurl.com/6c9ga6
