rem: return Components.classes[ progid ].createInstance( iid ); 
add: return Components.classes[ contractid ].createInstance( iid ); 
context: function createInstance( progid, iidName ) {  var iid = eval( "Components.interfaces." + iidName );  return Components.classes[ progid ].createInstance( iid );}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/0257791053c2b38e1dfaf2ee11afae973e82e394/PrefsWindow.js/clean/xpfe/components/prefwindow/resources/content/PrefsWindow.js