rem: catch (e) { } 
add: catch(ex) { }  this.enableCommand(command, enabled); 
context:   updateCommand: function(command) {    var controller = this._getControllerForCommand(command);    if (!controller)      return;    try {      this.enableCommand(command, controller.isCommandEnabled(command));    }    catch (e) {    }  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/975e04fa59a122be836320b55bb4727fc468589f/globalOverlay.js/clean/toolkit/content/globalOverlay.js