What can I say? Excellent work. What the developers are doing is great.
I had some minor issues with this plugin on my site, so it did not work 'out of the box' without tweaking some of the site CSS. Regardless, the developer was kind enough to offer free support.
Internet explorer's implementation of web standards is poor, and I hope people will at least upgrade to the latest version of IE (or just switch to a better browser). But for those users that don't, tools like these are a great help.