my flash game TD

this my game its a tower defense (TD) for short. the point of the game is to kill the enemys with the tower (if the tower does not show up on the screen reload the page). the tower does not have good accuracy because i had no idea on how to fix. the amount of enemys are about 200-300 hundred of them and has no rounds i wanted to put rounds and more towers but i did not have enough time to do that so this is what i have