rem: document.getElementById('defaultFeedClient').checked = mapiRegistry.isDefaultFeedClient; 
add: document.getElementById('defaultFeedClient').checked = mapiRegistry.isDefaultFeedClient; 
context:   onReadDefaultFeedPref: function()  {    var mapiRegistry = Components.classes["@mozilla.org/mapiregistry;1"].getService(Components.interfaces.nsIMapiRegistry);    document.getElementById('defaultFeedClient').checked = mapiRegistry.isDefaultFeedClient;       return mapiRegistry.isDefaultFeedClient;     },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/8feb50a6c9b117506dc15bbd2d7857a5ca3acc15/general.js/clean/mail/components/preferences/general.js