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Actionscript 3.0 - LEVEL BASIC
AS3 Example Flash Banner Class	Last edited 27TH NOV, 2009
This a very basic class for someone new to AS3 - showing how to setup a banner. It should be set as the document class.

package
{

// FLASH CLASS IMPORTS (whatever is needed has to be explicitly defined here)
   
    import flash.display.*;
    import flash.events.*;
    import flash.net.*;

public class simpleBanner extends MovieClip
    {

// CONSTANTS AND CLASS VARS
       
        public var DEFAULTURL:String = "INSERT BANNER URL HERE"; // obtain ClickTag if being passed in

// CONSTRUCTOR AND SETUP
       
        public function simpleBanner ()
        {

addEventListener (Event.ADDED_TO_STAGE, attach, false, 0, true);

}

private function attach (e:Event) : void
        {

// remove redundant listener
            removeEventListener (Event.ADDED_TO_STAGE, attach, false);
            
            evalParam("clickTag", "DEFAULTURL", DEFAULTURL);
           
            // add code to the button movieclip (must be called myBtn) on the stage
            myBtn.buttonMode = true;
            myBtn.addEventListener(MouseEvent.CLICK, bannerClick);

}

private function evalParam (sName:String, sVarName:String, $default:* ) : void
        {
           
            var checkVar:* = root.loaderInfo.parameters[sName];
           
            if ( checkVar == null || checkVar == undefined) this[sVarName] = $default;
            else this[sVarName] = checkVar;
           
        }
       
        //    ===================================================================================================================
       
        //    PUBLIC METHODS
       
        public function bannerClick (e:MouseEvent) : void
        {
           
            navigateToURL( new URLRequest( DEFAULTURL ) , "_blank");
       
        }

}