rem: var removeButton = document.getElementById("removeMasterPassword"); removeButton.disabled = noMP; 
add: document.getElementById("removeMasterPassword").disabled = noMP; 
context:   updateMasterPasswordButton: function ()  {    // See if there's a master password and set the button label accordingly    var secmodDB = Components.classes["@mozilla.org/security/pkcs11moduledb;1"]                             .getService(Components.interfaces.nsIPKCS11ModuleDB);    var slot = secmodDB.findSlotByName("");    if (slot) {      const nsIPKCS11Slot = Components.interfaces.nsIPKCS11Slot;      var status = slot.status;      var noMP = status == nsIPKCS11Slot.SLOT_UNINITIALIZED ||                  status == nsIPKCS11Slot.SLOT_READY;      var bundle = document.getElementById("bundlePreferences");      var button = document.getElementById("setMasterPassword");      button.label = bundle.getString(noMP ? "setMasterPassword" : "changeMasterPassword");            var removeButton = document.getElementById("removeMasterPassword");      removeButton.disabled = noMP;    }  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/a67fbac8e4cbe72eefd3d734cee667f4efb1052b/privacy.js/clean/mail/components/preferences/privacy.js