Hmm so what your saying is you're trying to get a browser to automatically resize it's contents as you're resizing a window.. I just checked and it works for me in IE, FireFox, and Chrome. I am not sure what would grant the ability to do this, I'm pretty sure it's just there.. that being said perhaps you don't have accelerated graphics driver or the correct/latest graphics driver installed (maybe that's required to do the on the fly rendering)?