I'm glad you found what you were looking for.
Try this too. It is not as detailed as Electoral-Vote.com, but it does have a nice interactive tool. If the toss-ups are split 50/50 between Rs and Ds, the result would be:
Senate: 1 (+-1) seat majority for Rs.
House: 4 (+-1) seat majority for Ds.
Governor: 3 (+-1) state majority for Ds.
The +-1 part is since the toss-ups are odd numbered, you can't get a 50/50 split with an odd number of seats.