Is it possible to emulate the functionality of a greasemonkey script in Firefox using the HTMLViewer control? I need to be able to make a browser with an add-in that helps end users to fill out forms, select items and trigger events (submit buttons) on web pages for a web app that I do not control (the web app is made and hosted by a large corporation, but my clients would definitely benefit from something that would help them use that web app).
It would be great if I could use XOJO to write a single app for most platforms that would allow me to supply this.