rem: docshell.document.charset, 
add: docshell.document.characterSet, 
context:     addBookmark : function() {      var docshell = document.getElementById( "content" ).webNavigation;      BookmarksUtils.addBookmark( docshell.currentURI.spec,                                  docshell.document.title,                                  docshell.document.charset,                                  false );    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/5e28b4d5da0c602ef8a500f0a150812e6afca406/nsContextMenu.js/clean/xpfe/communicator/resources/content/nsContextMenu.js