* You can obtain one at http://mozilla.org/MPL/2.0/. */
window.onload = function() {
- document.getElementById("jswarning").classList.add("hidden");
+ var jsWarning = document.getElementById("jswarning");
+ if (jsWarning) {
+ document.getElementById("jswarning").classList.add("hidden");
+ }
var loginForm = document.getElementById("loginform");
if (loginForm) {
loginForm.classList.remove("hidden");