It depends on how you've named the mc's,
f they're named: image1, image2, etc.
then you'll need to use the String.subtr() method to strip
out the word "image" from the name of the mc, then you can use the
remaining number as a reference to the mc, otherwise:
If you've dynamically attached the mc's (ie. using the
"attachMovie" method), then you could use the depth property as a
reference number.
Once again it depends on how you've got your flash file set
up.
Either way, try the following, it doesn't use any of the
above methods, but it should work anyway (can't test it out
myself)