ทำให้ As3 และ Javascript คุยกันได้ by plug.in

เรียก Function AS3 ด้วย Javascript

http://blog.code-head.com/calling-a-javascript-function-from-actionscript-3-flash

import flash.external.ExternalInterface;
...
ExternalInterface.call("your_javascript_function()");

var x:int = ExternalInterface.call("get_x()");

var retval:int = ExternalInterface.call("some_js_function", "the-argument");

เรียก Function AS3 ด้วย Javascript

http://codingforums.com/showthread.php?t=152181

Javascript

			// Provides the proper address for the movie depending on browser
			function getFlashMovie(movieName) {
			  	var isIE = navigator.appName.indexOf("Microsoft") != -1;
			  	return (isIE) ? window[movieName] : document[movieName];
			}

			function playMovie() { 
				getFlashMovie("video").JStoASviaExternalInterface("start");
			}

Action Script

function getTextFromJavaScript(str:String):Void {
		if (str = "start") {
startVideo();
}
}
ExternalInterface.addCallback("JStoASviaExternalInterface", this, getTextFromJavaScript);