clicktag confusion it is not using any target website .

As3 clicktag is not using any target website as well.  So what is the difference of all the banners. Everybody is using same clicktag . No URL . Strange .

I think the landing page linking is done in adwords or some providers when sign up

import flash.events.MouseEvent;

import flash.net.URLRequest;

import flash.net.navigateToURL;

click_btn.addEventListener(MouseEvent.MOUSE_UP, onClick);

function onClick(e:MouseEvent):void {

var click_url:String = root.loaderInfo.parameters.clickTAG;

if(click_url) {

  navigateToURL(new URLRequest(click_url), '_blank');

}

}