External swf and mouse position code

I have my main movie that I load an external swf that is centered in the main movie. The external swf has an animation that goes outside of its 404x464 document size. IS there any other way NOT to show the image that goes outside the 404x464 document size other than using a mask?

Also with the same setup I am using a mouse position code that I only want to be active when you roll over the 404x464 area of the external swf. Is this possible?