add:   this.createCharsetMenus(document.getElementById("sendDefaultCharset-menupopup"), "NC:MaileditCharsetMenuRoot", document.getElementById('mailnews.send_default_charset').value); 
context:   readDefaultCharset: function()  {    if (!this.mCharsetMenuInitialized)     {      Components.classes["@mozilla.org/observer-service;1"]                .getService(Components.interfaces.nsIObserverService)                .notifyObservers(null, "charsetmenu-selected", "mailedit");      this.mCharsetMenuInitialized = true;    }    return undefined;  }
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/09e8cdbd294d5f722af502f36c9445a3f3116c39/display.js/clean/mail/components/preferences/display.js