Remember The Milk signup form - jQuery Validate plugin demo - with friendly permission from the RTM team

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>Remember The Milk signup form - jQuery Validate plugin demo - with friendly permission from the RTM team
    </title>

$.mockjax({
                url: "users.action",
                response: function (settings) {
                    var user = settings.data.username,
                        users = ["asdf", "Peter", "Peter2", "George"];
                    this.responseText = "true";
                    if ($.inArray(user, users) !== -1) {
                        this.responseText = "false";
                    }
                },
                responseTime: 500
            });

// validate signup form on keyup and submit
            var validator = $("#signupform").validate({
                rules: {
                    firstname: "required",
                    lastname: "required",
                    username: {
                        required: true,
                        minlength: 2,
                        remote: "users.action"
                    },
                    password: {
                        required: true,
                        minlength: 5
                    },
                    password_confirm: {
                        required: true,
                        minlength: 5,
                        equalTo: "#password"
                    },
                    email: {
                        required: true,
                        email: true,
                        remote: "emails.action"
                    },
                    dateformat: "required",
                    terms: "required"
                },
                messages: {
                    firstname: "Enter your firstname",
                    lastname: "Enter your lastname",
                    username: {
                        required: "Enter a username",
                        minlength: jQuery.validator.format("Enter at least {0} characters"),
                        remote: jQuery.validator.format("{0} is already in use")
                    },
                    password: {
                        required: "Provide a password",
                        minlength: jQuery.validator.format("Enter at least {0} characters")
                    },
                    password_confirm: {
                        required: "Repeat your password",
                        minlength: jQuery.validator.format("Enter at least {0} characters"),
                        equalTo: "Enter the same password as above"
                    },
                    email: {
                        required: "Please enter a valid email address",
                        minlength: "Please enter a valid email address",
                        remote: jQuery.validator.format("{0} is already in use")
                    },
                    dateformat: "Choose your preferred dateformat",
                    terms: " "
                },
                // the errorPlacement has to take the table layout into account
                errorPlacement: function (error, element) {
                    if (element.is(":radio"))
                        error.appendTo(element.parent().next().next());
                    else if (element.is(":checkbox"))
                        error.appendTo(element.next());
                    else
                        error.appendTo(element.parent().next());
                },
                // specifying a submitHandler prevents the default submit, good for the demo
                submitHandler: function () {
                    alert("submitted!");
                },
                // set this class to error-labels to indicate valid fields
                success: function (label) {
                    // set   as text for IE
                    label.html(" ").addClass("checked");
                },
                highlight: function (element, errorClass) {
                    $(element).parent().next().find("." + errorClass).removeClass("checked");
                }
            });

// propose username by combining first- and lastname
            $("#username").focus(function () {
                var firstname = $("#firstname").val();
                var lastname = $("#lastname").val();
                if (firstname && lastname && !this.value) {
                    this.value = (firstname + "." + lastname).toLowerCase();
                }
            });
        });
    </script>
</head>

<body>
    <h1 id="banner"><a href="http://jqueryvalidation.org/">jQuery Validation Plugin</a> Demo</h1>
    <div id="main">
        <div id="content">
            <div id="header">
                <div id="headerlogo">
                    <img src="http://t.runoops.com/js/lib/jqueryvalidation-1.19.5/demo/milk/milk.png" alt="Remember The Milk">
                </div>
            </div>
            <div style="clear: both;">
                <div></div>
            </div>
            <div class="content">
                <div id="signupbox">
                    <div id="signuptab">
                        <ul>
                            <li id="signupcurrent"><a href=" ">Signup</a>
                            </li>
                        </ul>
                    </div>
                    <div id="signupwrap">
                        <form id="signupform" autocomplete="off" method="get" action="">
                            <table>
                                <tr>
                                    <td class="label">
                                        <label id="lfirstname" for="firstname">First Name</label>
                                    </td>
                                    <td class="field">
                                        <input id="firstname" name="firstname" type="text" value="" maxlength="100">
                                    </td>
                                    <td class="status"></td>
                                </tr>
                                <tr>
                                    <td class="label">
                                        <label id="llastname" for="lastname">Last Name</label>
                                    </td>
                                    <td class="field">
                                        <input id="lastname" name="lastname" type="text" value="" maxlength="100">
                                    </td>
                                    <td class="status"></td>
                                </tr>
                                <tr>
                                    <td class="label">
                                        <label id="lusername" for="username">Username</label>
                                    </td>
                                    <td class="field">
                                        <input id="username" name="username" type="text" value="" maxlength="50">
                                    </td>
                                    <td class="status"></td>
                                </tr>
                                <tr>
                                    <td class="label">
                                        <label id="lpassword" for="password">Password</label>
                                    </td>
                                    <td class="field">
                                        <input id="password" name="password" type="password" maxlength="50" value="">
                                    </td>
                                    <td class="status"></td>
                                </tr>
                                <tr>
                                    <td class="label">
                                        <label id="lpassword_confirm" for="password_confirm">Confirm Password</label>
                                    </td>
                                    <td class="field">
                                        <input id="password_confirm" name="password_confirm" type="password"
                                            maxlength="50" value="">
                                    </td>
                                    <td class="status"></td>
                                </tr>
                                <tr>
                                    <td class="label">
                                        <label id="lemail" for="email">Email Address</label>
                                    </td>
                                    <td class="field">
                                        <input id="email" name="email" type="text" value="" maxlength="150">
                                    </td>
                                    <td class="status"></td>
                                </tr>
                                <tr>
                                    <td class="label">
                                        <label>Which Looks Right</label>
                                    </td>
                                    <td class="field" colspan="2" style="vertical-align: top; padding-top: 2px;">
                                        <table>
                                            <tbody>
                                                <tr>
                                                    <td style="padding-right: 5px;">
                                                        <input id="dateformat_eu" name="dateformat" type="radio"
                                                            value="0">
                                                        <label id="ldateformat_eu" for="dateformat_eu">14/02/07</label>
                                                    </td>
                                                    <td style="padding-left: 5px;">
                                                        <input id="dateformat_am" name="dateformat" type="radio"
                                                            value="1">
                                                        <label id="ldateformat_am" for="dateformat_am">02/14/07</label>
                                                    </td>
                                                    <td>
                                                    </td>
                                                </tr>
                                            </tbody>
                                        </table>
                                    </td>
                                </tr>
                                <tr>
                                    <td class="label"> </td>
                                    <td class="field" colspan="2">
                                        <div id="termswrap">
                                            <input id="terms" type="checkbox" name="terms">
                                            <label id="lterms" for="terms">I have read and accept the Terms of
                                                Use.</label>
                                        </div>
                                        
                                    </td>
                                </tr>
                                <tr>
                                    <td class="label">
                                        <label id="lsignupsubmit" for="signupsubmit">Signup</label>
                                    </td>
                                    <td class="field" colspan="2">
                                        <input id="signupsubmit" name="signup" type="submit" value="Signup">
                                    </td>
                                </tr>
                            </table>
                        </form>
                    </div>
                </div>
            </div>
        </div>
    </div>
</body>

</html>