Triglav -- javascript based RPG engine

Web browsers can do waaay much more than just display static documents. However usually folks create games for the web in java or flash. This site has given us a real treat in that they have created an RPG engine in DHTML. My only big beef with this is that they have coded it for IE only. So go give it a try and send them an email asking for them to upgrade their engine to support mozilla firefox.