However, if you're trying to do it over top of Standard Pages, I think you might need to use the Adobe Flash Builder for Force.com because you wouldn't be able to add JS or jQ to those page, but might be able to run the plug-in on those pages. Unfortunately, the link to the actual download page seems to be broken, so I've linked to the FAQ page instead. Regardless, I'm fairly confident that Salesforce builds theirs using Flash and ActionScripts from within the latest builder. I believe this product used to be referred to as Adobe Flex builder, but they may have changed the name. More info and the link to a video on it can able be seen at Building Rich Cloud Applications with Force.com and Flex.