javascript postMessage not working

Question

I don\'t know what to do. I tried several sample codes from different sources, I tried them in different browsers (from Chrome 9 to FF 4), and still nothing seems to be working

Answer 1

I'm not sure of the security concerns, but typically, I just grab the parent window location like this:

var url = (window.location != window.parent.location) ? document.referrer: document.location;
top.postMessage('message', url);