I was experimenting with cappuccino this weekend, I've been trying to develop an application to sit inside of a web based ECM environment. I also noticed that cappuccino seems to take over the whole window, which made me wonder if i could use it. (This is an enterprise application, I can't use cappuccino if I can't embed my application into a webpage). Turns out that this is relatively simple to do if you use an iframe. Kind of annoying that you have to do it that way -- but the framework seems to have the functionality that I'm looking for to build my application, so I'll grin and bear it.