rem: otherCalTaskBarIcon.hidden = false; otherCalMenuItem.hidden = false; 
add: if (otherCalTaskBarIcon) otherCalTaskBarIcon.hidden = false; if (otherCalMenuItem) otherCalMenuItem.hidden = false; 
context: function OtherTasksOnLoad(){  var otherCalTaskBarIcon = document.getElementById("mini-other-cal");  var otherCalMenuItem = document.getElementById("tasksMenuOtherCal");  var appFile = getAppFile("task.calendar.location");  if (appFile && !haveInternalCalendar())  {    otherCalTaskBarIcon.hidden = false;    otherCalMenuItem.hidden = false;  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/f7a3edb2b320305a3287e218a2c83f1dcea0ee27/tasksOverlay.js/clean/extensions/tasks/resources/content/tasksOverlay.js