This plugin means strophe can work without any cross domain policy limitation. This plugin is developed by iAdvize and under the MIT license.
To use it, simply edit jproxy.php to define your BOSH url and point strophe connection to the jproxy.php script.
It uses a modified version of jXHR.js
Like strophe.js, this plugin has been tested on Firefox 2.x and later, IE 6 and later, Safari, Opera and Chrome.