at first thanks a lot for the answer.
Unfortunately changing the overlapping like you said didn't help.
With the "after all were pressed at the same time, the frame just jumps back to 0 again when all aren't pressed any longer." i tried to describe the following issue:
If i just press one switch (by overlapping it) everything works fine (it changes the frames from "pressed" to "unpressed" just as it should.
When other switches get pressed while one is already pressed they all change their frames to "pressed" (so far so good), but when one of them then isn't pressed any longer, while one or more others are still pressed, it doesn't change its frame back to "unpressed".
Just when all switches aren't pressed any longer, they all change their frame back to "unpressed" at once.
i hope it helps <img src="smileys/smiley5.gif" border="0" align="middle" />