I would like to imitate the Frogger <img src="smileys/smiley2.gif" border="0" align="middle" /> Game but the only thing I fall through is to move with the Things in the River and to switch off the collision Effect with the River clearly <img src="smileys/smiley5.gif" border="0" align="middle" /> . Can anyone give me a hint to make these Effect possible without bugs? Thanks for help <img src="smileys/smiley4.gif" border="0" align="middle" />