Mysql query

[swedguy]

My mind is completely blank right now, so please help me out here

Table:

sponsor | keyword | banner
sponsor1 | horizontal | banner1.jpg
sponsor1 | vertical | banner2.jpg
sponsor1 | button | banner3.jpg
sponsor2 | horizontal | banner4.jpg
sponsor2 | vertical | banner5.jpg
sponsor3 | horizontal | banner6.jpg
sponsor3 | vertical | banner7.jpg
sponsor3 | small | banner8.jpg

Sponsor1 has: horizontal, vertical and button banners
Sponsor2 has: horizontal, vertical
Sponsor3 has: horizontal, vertical and small

Now I want to make a query that gets me this info:
" Find a sponsor that has horizontal and vertical and (button or small) "

I made a quick and dirty to find sponsor that has horizontal and vertical and ..... banners.

SELECT COUNT(DISTINCT keyword) from table WHERE keyword LIKE 'horizontal' OR keyword LIKE 'vertical'

If I was looking for 2 kinds of banners and the query returned a 2, BINGO!

I'm at a loss how to do it differently. So if anyone got a different way and a solution to the first query, I'm all ears