{

var hex = ['0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'];

var string = "";

while(len-->0) { string += hex[parseInt(16*Math.random())]; }

var classes = "";

if(input["class"]) { classes = input.getAttribute("class"); }

input.setAttribute("class", classes + " error");

input.title = reason;

if(input.getAttribute("class")) {

var stripped = input.getAttribute("class").replace("error", "");

input.setAttribute("class", stripped); }

input.title = "";

{

var username = input.value;

if(username.trim()=="") { return this.markInvalid(input, "You forgot your user name."); }

if(username.indexOf("'")>-1) { return this.markInvalid(input, "Apostrophes are not allowed in user names."); }

if(username.length<4) { return this.markInvalid(input, "Sorry, user names must be more than 3 letters."); }

return this.markValid(input);

{

var valid = /[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?/.test(input.value);

if(!valid) { return this.markInvalid(input,"This is not a real email address..."); }

return this.markValid(input);

{

var matched = (input1.value==input2.value);

if(!matched) { return this.markInvalid(input2, "The two passwords don't match"); }

return this.markValid(input2);

{

var password = input.value;

if(password.trim()=="") { return this.markInvalid(input, "You need to fill in a password"); }

return this.markValid(input);

{

var password = input.value;

if(!this.validPassword(input)) { return false; }

// you want to mofidy the following line to suit your personal preference in

// secure passwords. And remember that any policy you set has to work in an

// international setting. Passwords can contain any Unicode character, and

// are case sensitive. Don't rely on space-separated words, because several

// big languages don't use spaces. Don't demand "numbers and letters" because

// that just confuses your users. If you want to enforce strong passwords,

// calculate how easy it is to guess the password, and report how quickly

// you can figure out their password so that they pick a better one.

if(password.length<8) { return this.markInvalid(input, "Your password is too easy to guess, please pick something longer. Use an entire sentence. if you like."); }

return this.markValid(input);

{

var valid = true;

var form = document.getElementById('registration');

valid &= this.validName(form["username"]);

valid &= this.validEmail(form["email"]);

valid &= this.passwordMatch(form["password1"], form["password2"]);

valid &= this.strongPassword(form["password1"]);

if(valid) {

form["sha1"].value = Sha1.hash(form["password1"].value);

form["password1"].value = this.randomString(16);

form["password2"].value = form["password1"].value;

form.submit(); }

{

var valid = true;

var form = document.getElementById('login');

valid &= this.validName(form["username"]);

valid &= this.validPassword(form["password1"]);

if(valid) {

form["sha1"].value = Sha1.hash(form["password1"].value);

form["password1"].value = this.randomString(16);

form.submit(); }

{

var valid = true;

var update = false;

var form = document.getElementById('update');

// email?

if(form["email"].value.trim()!="") {

valid &= this.validEmail(form["email"]);

if(valid) update = true; }

// password?

if(form["password1"].value.trim()!="") {

valid &= this.passwordMatch(form["password1"], form["password2"]);

valid &= this.strongPassword(form["password1"]);

if(valid) {

form["sha1"].value = Sha1.hash(form["password1"].value);

form["password1"].value = this.randomString(16);

form["password2"].value = form["password1"].value;

update = true; }}

if(valid && update) { form.submit(); }

var tag = document.createElement(tag);

if(properties !== null) {

for(property in properties) {

tag[property] = properties[property]; }}

// eliminate the need to type "this." everywhere in the function

var add = this.add;

var make = this.make;

var form = this.make("form", {id: "usered_login_form", action: ".", method: "POST"});

add(form, make("label", {"for": "usered_username", innerHTML: "user name"}));

add(form, make("input", {id: "usered_username", type: "text"}));

add(form, make("label", {"for": "usered_password", innerHTML: "password"}));

add(form, make("input", {id: "usered_password", type: "password"}));

add(form, make("input", {id: "usered_login_button", type: "submit", value: "log in"}));

add(parent, form);

// eliminate the need to type "this." everywhere in the function

var add = this.add;

var make = this.make;

var form = make("form", {id: "usered_logout_form", action: ".", method: "POST"});

add(form, make("input", {type: "hidden", name: "op", value: "logout"}));

add(form, make("input", {id: "usered_logout_button", type: "submit", value: "log out"}));

add(parent, form)