Accessing document's javascript variable from firefox extension

Question

is it possible for Firefox extension (toolbar) to access document\'s variables? detailed explanation follows..

loaded document:

Answer 1

not so hard :)

in extension:

var jso=window.content.document.defaultView.wrappedJSObject;

now you can access any function or global variable in the webpage from the extension:

alert(jso.pagevar);

jso.pagefunction("hey");