I fixed the height... sort of... if you look at October things look better... but if one day has a LOT of events (see november 4th) most browsers will add to the height to make room for the additional event text.
With that in mind, I'm not sure there's a way to guarantee the height... unless I only showed the first x number of events, but then people would miss things because some events would be hidden to maintain the height - it's a delicate balance
We could certainly add a highlight searched day feature, I'll be sure to add that to the list.
Thanks for the feedback!
Please keep comments/suggestions coming