This being the Pre-2010 forum, expect a pox to fall upon your family. Sorry, that's just the way it is.
I have put HTML in a content editor webpart, but have only put XSL inside the XSL Editor. It's kinda right there in the name and all, but I would guess that they non-XSL wouldn't be usable in the XSL Editor.
So, maybe add a CEWP to the page, add your HTML, and see what happens.
Steve Clark, MCTS | Twin-Soft.com
Easy Bins Dumpster Rentals of Northern VA. (Specializing in driveway-sized roll-off dumpsters.)
Be sure to click one of them there forum buttons that artificially inflates my narcissitic ego... I mean gives me points.