Interfacing with JavaScript from Flash is pretty easy actually! It’s done with the help of a nifty little class called “ExternalInterface”. The process is simple; you import the class and then use the “call” method to call a JavaScript function on the parent page and parse any parameter you may want.

Here is a simple bit of actionscript demonstrating how to do this:

// Import the ExternalInterface class
import flash.external.*;

// Call the JavaScript function 'myFunction' and parse the value 'myParameter'
myMovie.onRelease = function () {
	ExternalInterface.call('myFunction', 'myParamenter');
}