add: currentDocument = null; 
context:     this.invoke=function () {        try {            fn();        } finally {            removeLoadListener(getIframe(), self.invoke);        }    }
meta: 3175	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3175/a571d0ab29c9c650dde37a79dcc38968ddf4302c/selenium-browserbot.js/buggy/javascript/selenium-browserbot.js