[MX or 5] Zoom in and out (similar to context menu)

I have a country map, I want to put two buttons “Zoom out” and “Zoom in” and I want from them access by actionscript to the options provided by the right click on a flash movie like: zoom in , out 100% ¿is there any easy way to do this?

Thanks in advance,

Asterix

On the zoom in button:

on (press){
 map._xscale+=10;
 map._yscale+=10;
}

Zoom out:

on (press){
 map._xscale-=10;
 map._yscale-=10;
}

=)