You also have scroll to on 3 or 4 other objects on the screen - usermedia, stopwebcam, etc. Try removing these extra scroll to and see what happens.
If you want these extras to stay on the screen look at the way that the HUD is put together in the introductory tutorials ?
And What's The Deal With The Capital Letters ? <img src="smileys/smiley1.gif" border="0" align="middle" />