Absolutely excellent add-on, it worked seamlessly with Ctrl+mouse wheel scroll. I didn't even remember I installed it, it was perfect just when I needed it!

Excellent addon, although I can't seem to access the settings menu on firefox? However, it is still very useful despite this.

It's weird that this is the only extension I could find that does this one simple thing.

Anyhow, works perfectly!

Thanks--almost exactly what I needed. Configurable settings would be most useful if you do an update. In the meantime, I edited zoomStep to fit my needs.