rem: var searchStr = focusedWindow.__proto__.getSelection.call(focusedWindow); 
add: var searchStr = focusedWindow.getSelection();; 
context:     searchSelected : function() {        var focusedWindow = document.commandDispatcher.focusedWindow;        var searchStr = focusedWindow.__proto__.getSelection.call(focusedWindow);        searchStr = searchStr.toString();        searchStr = searchStr.replace( /^\s+/, "" );        searchStr = searchStr.replace(/(\n|\r|\t)+/g, " ");        searchStr = searchStr.replace(/\s+$/,"");        return searchStr;    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/f0322f1354365993fe9007601f003ff01afdea6f/nsContextMenu.js/clean/mail/base/content/nsContextMenu.js