Dropdown Textbox?

Is there any tutorials that someone can lead me to concerning a drop-down text box? To give you an idea of what I want, I’m making a testimonials section on a website, I want the user to be able to hover over a name for a second and have their testimonial drop down. And when they go out of the range of the drop down text box, I would like it to go back up. Please help! This needs to be done in a few weeks, so speed is greatly appreciated! Thanks!

Ben Walker