Mouse to move your paddle and left click to launch.
Funny enough, the actual ball hitting the blocks mechanic wasn't all that difficult. It was things like the choosing sounds, setting up the play space, and designing the actual bricks that took the most time.
I ended up making my own sounds using Bfxr. Will most likely change them when I get around to it.
Try to avoid hitting the reload button while you're playing. It more or less breaks the game.
Notes to self: 1) Increase ball speed as times goes on to increase difficulty. 2) Remove that quit button for the web version.