I'm not sure why everybody else seems so critical. Frankly, if you don't like cursor-avoiding course games, then don't play them; it's as simple as that. Anyways, for a mouse-avoider this is a very good one. I like that it's short, especially with the few lives that we get. But that's fine, because it is short, the fewer lives make it last a little longer. Although, I must admit, after having lost the last life, I didn't try again, but it didn't frustrate me very much because I knew it only had five levels. It looks very sleek and professional, and the music goes well with it; I'm not sure if the walls that closed in and opened out were in tune with the beat or not, but it sure seemed like it.
Overall, nice job. It's a nice, clean little short game. Props.