What I have done in the past is to take one (or more - as needed) of those physician's tongue depressors, or even just a popsicle stick, and tape it with one end on the F16 key and one end on the tab key. Voila.
Install a utility such as BetterTouchTool, that will allow you to map keys such as F16 to the tab key. There are other hot key utilities, but btt is free and is wonderful at adding new gestures to trackpads and magic mice. Plus it has a great window resize feature.