Communication between main file and loaded file

Hi all,

I'm trying to create some interaction between two edge files.

My first edge file called index.html has a button and a movieclip on it. When you click on the button, it loads (with edgecommons) another file (called page1.html) somewhere into index.html. In page1.html, you have a button and when you click on it, it must make the moviclip on index.html disappear. My question is: How to target the movieclip in the first index.html file from the page1.html file ? is it possible?

Thanks in advance for your answers.

Chris