Call Actionscript function inside the HTML

Question

    I am working in an AIR application.

htmltext poperty only works in Flex.

I have an HTML control with id as "html" and an HTML page is loaded inside it. I want to invoke an ActioScript function inside my AIR application from the javascript inside that HTML page (eg : If I have a button inside HTML page when I click on it it should invoke an AS function inside the mx:Script). PLease provide an example using the HTML control inside AIR PLease anyone Help