A cross platform functioning button

Question

I'm building a hybrid CD that has buttons in it that launch
.pdfs.
To do so on the PC side I'm using JStart so that when a
button is clicked it runs an executable that launches the .pdf in
Reader:
on (release) {
fscommand("Exec", "JSTART_GS_02gs.EXE");
FYI - "JSTART_GS_02gs.EXE" points to the .pdf called
GS_02gs.pdf
On the MAC side I'm using a get url command to launch the
.pdf:
on (release) {
getURL("MM/fscommand/GS_02gs.pdf");
fscommand is the folder where the .pdfs and JStart files are
located. They have to be here in order for them to launch correctly
on the PC side.
Rignt now I have two buttons for each .pdf - one for MAC and
one for PC. I'd like to use just one button for both of these
commands. If I put both of these commands on one button they both
work, however on the PC side it also pulls up a blank web page due
to the "get url" for the MAC side. Is it possible to have the PC
side ignore the "get url" command, but not ignore it on the MAC
side? Should I be using an entirely different code structure to
make this happen?
thanks!

Answer 1

Check the Systems.capabilities class. There you will find out
how see platform you are on.
You could then set some variable to indicate which one and
use an if statement on the button.