Any tips on how to get a slide in/out when a user hovers over some text?

Hi
I was just wondering if there's any way I can get text to 'reveal' when a user hovers over another person of text - so for example, they hover over a price and it shows the add to cart button (that's just an example), or ideally, hover over a name and it reveals the persons telephone and email address?

Thanks
Farzan