Not bad.
Actually, one of the better games I've seen recently. It has a few problems, though.
1. You misspelled "height". That just bugs me, although I'm a spelling freak.
2. The game didn't go fast enough. It needed to scroll a lot faster than it did. It was just boring being so slow.
3. The string looks wrong. The lowest part of the string should be near the middle, not really close to the blue guy.
And... that's it. Fix those problems and this could be front page material.