Access to the elements of the page in the Page-Worker - firefox-addon-sdk

Question

I've created a page-worker in the extension
dup = pageWorker.Page({
contentScript: "self.port.on('alert', function(message) {"+
"console.log(message);"+
"document.querySelector('.test-element').title = message;"+
"});",
contentScriptWhen: "ready",
contentURL: "http://example.com/Licznik-beta/addon.html"
});
In "contentScript" I can relate to "document".
But I can not relate to the window, or function, or variable.
console.log(window) in contentScript return "TypeError: cyclic object value timers.js:43".
I do not understand how it works.
Can someone explain to me?
How to change it?
EDIT
I've added a few lines to the test:
self.port.on('addon-licznik', function () {
console.log(document);
console.log(window); // TypeError: cyclic object value timers.js:43
runFromAddon(); // ReferenceError: runFromAddon is not defined timers.js:43
});
Function: runFromAddon(); Of course there is.
Second test:
function funSet (tresc) {
var addonScript = document.querySelector(".addon-script");
if ( addonScript != undefined ) {
document.querySelector('head').removeChild( addonScript );
}
var script = document.createElement("script");
script.className = "addon-script";
script.textContent = tresc;
document.querySelector('head').appendChild(script);
}
function marmo (message) {
console.log(message);
funSet("console.log(window); runFromAddon();");
}
self.port.on('addon-licznik', marmo);
It works well.
Window → http://example.com/Licznik-beta/addon.html
runFromAddon-Log

Answer 1

If you're writing the HTML yourself, then use addon instead of self and attach the script to the page using <script></script> instead of contentScript(File). See Scripting trusted page content.
If you're not writing the HTML, then see Communicating with Page Scripts.