Ack yeah that's an easy way to break mouse support xD
Thanks though, and actually "too big" technically wouldn't be much of an issue since you can always set the browser window size to whatever, which works fine. You mentioned using browser zooming, which I had tried first, but for me that did not change the size of the game itself, so I had assumed there was no easy way to use the browser to do that.
Also, rather than dynamic scaling I would certainly prefer having it crisp/pixel-perfect (as in the screenshots!), to maximize enjoyment of playing with one of my favorite fonts ;)
But anyway, at least it's visible now, and works, and I am going to try this out. I can just use keyboard mode, although I imagine examining things is faster via mouse without any quick way to tab between targets and so on...