A while back for a project I was working that was to become a web application, I was working on developing a unique and smooth UI that would be responsive to window changes, rezises and compatible across multiple browsers.
Eventually I hope to clean this up some and make it a decently configurable and deployable bit of code work, I may even start a github repository for this just to have it there and keep an eye on the revisions. Maybe you will find this useful for something as well. Either way, take a look, try different browsers, resize and stuff, there are some limits, but that’s based on configuration.
Let me know if you find any bugs or have any suggestions.