javascript: var auto = {
    password: 'DEINPASSWORT',
    fillerup: function() {
        var all_inputs = document.getElementsByTagName('input');
        for (var i = 0, max = all_inputs.length; i < max; i++) {
            var inp = all_inputs[i];
            var type = inp.getAttribute('type');
            if (!type) {
                type = 'text';
            }
            if (type == 'password') {
                if (!inp.value) {
                    inp.value = this.getPassword();
                }
            }
        }
    },
    getPassword: function() {
        if (!this.password) {
            this.password = 'DEINPASSWORT';
        }
        return this.password;
    }
};
auto.fillerup()