Flash Map City Limits

Hiya Flashers;
This is a tricky q so itll take a sharp mind to solve…
I have a zooming map that uses buttons to navigate the clip
however I wanna set a variable on the buttons so it doesnt
move outside the designated area on the map… :-/
I tried this code b-low but it passes the variable if the
mouse is held down…


on(press) {
	if (zoomMC.tzoom <= 140){
	zoomMC.tzoomc=0;
	}
	else{
	zoomMC.tzoomc=-2;
	}
	
}

on (release, releaseOutside) {
	_level0.host.zoomMC.tzoomc=0;
}


http://home.ripway.com/2004-3/80050/zoom_map.zip

Theres a link to the fla, I know some AS guru should be
able to come up with a solution, myself and ‘Lunatic’
came close 2 cracking, but no cigar!!!

Any help mucho appreciated… :thumb: