var status_classes = 'alert-error alert-success alert-info';

function autofocus(selector) {
    $(function () {
        $(selector)[0].focus();
    });
}

// Return a list of
//
//   - A width setting for a graphical password quality indicator.
//   - A boolean indicating whether the password is acceptable.
//
// Assumes that zxcvbn.js has been loaded.
//
// This is in common.js because we want to use it from the signup page
// and also from the in-app password change interface.
function password_quality(password) {
    // We load zxcvbn.js asynchronously, so the variable might not be set.
    if (typeof zxcvbn === 'undefined')
        return undefined;

    var result  = zxcvbn(password);
    var quality = Math.min(1, Math.log(1 + result.crack_time) / 22);

    // Display the password quality score on a progress bar
    // which bottoms out at 10% so there's always something
    // for the user to see.
    var width = ((90 * quality) + 10) + '%';

    return [width, result.crack_time >= 1e5];
}