Pardon me for the somewhat obvious response, but I'm sure you could resize your browser window such that it does not overlap with the dock.
Maybe I don't understand the precise nature of the problem, but it seems to me that if your Dock is overlapping with the min-max-close buttons in a maximized window, then this isn't just a problem with web-browsing--it would impact any full-sized window application that you may be running. If that's the case, this may simply be a bad choice of places to have your Dock located.
Does anyone know (it's been a while since I've run OD+, b/c of things I've read regarding Vista x64 compatibility) if there are hotkeys that can be programmed to show/hide docks? That might be a potential workaround.
Do you have screenshots that show the problem you can post?