http://benalman.com/projects/jquery-postmessage-plugin/
Version: 0.5, Last updated: 9/11/2009
jQuery postMessage enables simple and easy window.postMessage communication in browsers that support it (FF3, Safari 4, IE8), while falling back to a document.location.hash communication method for all other browsers (IE6, IE7, Opera).
With the addition of the window.postMessage method, JavaScript finally has a fantastic means for cross-domain frame communication. Unfortunately, this method isn't supported in all browsers. One example where this plugin is useful is when a child Iframe needs to tell its parent that its contents have resized.
Visit the project page for more information and usage examples!
http://benalman.com/code/projects/jquery-postmessage/docs/
This working example, complete with fully commented code, illustrates one way in which this plugin can be used.
http://benalman.com/code/projects/jquery-postmessage/examples/iframe/
Information about what version or versions of jQuery this plugin has been tested with and what browsers it has been tested in.
1.3.2+
For jQuery 1.9.2+ you also need the jQuery.browser plugin.
https://github.com/gabceb/jquery-browser-plugin
Internet Explorer 6-8, Firefox 3, Safari 3-4, Chrome, Opera 9.
0.5 - (9/11/2009) Improved cache-busting
0.4 - (8/25/2009) Initial release
Copyright (c) 2009 "Cowboy" Ben Alman
Dual licensed under the MIT and GPL licenses.
http://benalman.com/about/license/