Is there anyway to make a table (with a small amount of text in ea cell, prob just a number) and when you hover over the cells something larger appears with text in it?

Or any ideas on how to do something like that. The goal is to shrink a calendar made out of a table so a whole semester of days can be viewed with less scrolling.

I have a feeling the simple answer to this will be a 'no' but any ideas are helpful.
Thanks