rem: return true; 
add:    return !prefValue; 
context: function getPrefValueForCheckbox(prefName){  var prefValue;  try {    prefValue = pref.GetCharPref(prefName);    if(prefValue != "allAccess" && prefValue != "sameOrigin"){      return false;     }  }  catch(e) {}  return true;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/fe6bdab9a78753158bc0406d0aa1aafeee0d05aa/pref-scripts.js/clean/suite/common/pref/pref-scripts.js