rem: gPrefs.setBoolPref("mailnews.display.prefer_plaintext", true); gPrefs.setIntPref("mailnews.display.html_as", 1); gPrefs.setIntPref("mailnews.display.disallow_mime_handlers", disallow_classes_no_html); 
add: gPrefBranch.setBoolPref("mailnews.display.prefer_plaintext", true); gPrefBranch.setIntPref("mailnews.display.html_as", 1); gPrefBranch.setIntPref("mailnews.display.disallow_mime_handlers", disallow_classes_no_html); 
context: function MsgBodyAsPlaintext(){    gPrefs.setBoolPref("mailnews.display.prefer_plaintext", true);    gPrefs.setIntPref("mailnews.display.html_as", 1);    gPrefs.setIntPref("mailnews.display.disallow_mime_handlers",                      disallow_classes_no_html);    MsgReload();    return true;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/944dbeea99783f32c08eddb7e3d124ea7c165a5e/mailWindowOverlay.js/clean/mailnews/base/resources/content/mailWindowOverlay.js