rem: var toolbar = document.getElementById(id); if (!toolbar) return; 
add: var toolbar = document.getElementById(aToolbarId); var menuItem = document.getElementById(aMenuItemId);  if (!toolbar || !menuItem) return;  var toolbarCollapsed = toolbar.collapsed; 
context: function onViewToolbarCommand(id, aEvent){  var toolbar = document.getElementById(id);  if (!toolbar) return;    toolbar.collapsed = aEvent.originalTarget.getAttribute("checked") != "true";  document.persist(id, "collapsed");}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/70bc1f1e04aef735d66a06aa02e4ade18d4553eb/mailCore.js/buggy/mail/base/content/mailCore.js