buttons:
                    [
                        {
                            class: "firstButton",
                            text: "Register Me",
                            click: function () {
                                ($("#register").find(':input')).validate({
                                    rules: {
                                        userName: {
                                            required: true,
                                            minLength: 10
                                        },
                                        email: {
                                            required: true,
                                            email: true
                                        },
                                        pwd: {
                                            required: true,
                                            minLength: 8
                                        },
                                        conPwd: {
                                            equalTo: "#pwd"
                                        }
                                    },
                                    messages: {
                                        userName: {
                                            required: "* required",
                                            minlength: jQuery.validator.format("At least {0} characters required!")
                                        }
                                    }
                                });
                                var status = ($("#register").find(":input")).valid();
                                if (status == false) {
                                    alert('Invalid form!');
                                    return false;
                                }

<div id="register" title="New Member Registration">
        <div class="modalCaption">
            <span class="red">Fields in red</span>
            <span>are required.  Your information is not shared with anyone and is fully encrypted in our
            database for your peace of mind.</span>
        </div>
        <br />
        <div class="row">
            <div class="row_label_red">Desired User Name :</div>
            <div class="row_field"><input type="text" name="userName" size="32" MaxLength="32" required/></div>
        </div>
        <div class="row">
            <div class="row_label_red">Your Email :</div>
            <div class="row_field"><input type="text" name="email" size="32" MaxLength="64" required/></div>
        </div>
        <div class="row">
            <div class="row_label_red">Password (6 char. min) :</div>
            <div class="row_field"><input type="password" name="pwd" size="32" MaxLength="32" required /></div>
        </div>
        <div class="row">
            <div class="row_label_red">Confirm Password :</div>
            <div class="row_field"><input type="password" name="conPwd" size="32" MaxLength="32" required/></div>
        </div>
        <div class="row">
            <div class="row_label">Your Last Name :</div>
            <div class="row_field"><input type="text" name="lastName" size="32" MaxLength="64" /></div>
        </div>
        <div class="row">
            <div class="row_label">Your First Name :</div>
            <div class="row_field"><input type="text" name="firstName" size="32" MaxLength="64" /></div>
        </div>
        <div class="row">
            <div class="row_label">ZIP/Postal Code :</div>
            <div class="row_field"><input type="text" name="zip" size="10" MaxLength="10" /></div>
        </div>
        <div class="row">
            <div class="row_label">How Did You Hear About Us?</div>
            <div class="row_field">
                <select name="about">
                    <option Value="NONE" Selected>-- Please Choose One --</option>
                    <option value="News">News Article</option>
                    <option value="Google">Google Search</option>
                    <option value="Bing">Bing Search</option>
                    <option value="OtherSearch">Other Search Engine</option>
                    <option value="Friend">Friend's Referral</option>
                    <option value="Miscellaneous">Other</option>
                </select>
            </div>
        </div>
        <div class="row">
            <div id="spStatus"></div>
        </div>
    </div>

<script>
        $(document).ready(function () {

            jQuery.validator.setDefaults({
                debug: true,
                success: "valid"
            });

            $.validator.methods.email = function( value, element ) {
                return this.optional( element ) || /[a-z]+@[a-z]+.[a-z]+/.test( value );
            }

            $("#opener").button();

            $("#opener").click(function () {
                $("#register").dialog("open");
            });


            $("#register").dialog({
                appendTo: "form",
                autoOpen: false,
                show: { effect: "fadeIn" },
                hide: { effect: "fadeOut" },
                modal: true,
                draggable: false,
                minWidth: 750,
                minHeight: 400,
                resizable: false,
                dialogClass: "no-close",
                buttons:
                    [
                        {
                            class: "firstButton",
                            text: "Register Me",
                            click: function () {
                                $("#register").find(':input').validate({
                                    rules: {
                                        userName: {
                                            required: true,
                                            minLength: 10
                                        },
                                        email: {
                                            required: true,
                                            email: true
                                        },
                                        pwd: {
                                            required: true,
                                            minLength: 8
                                        },
                                        conPwd: {
                                            equalTo: "#pwd"
                                        }
                                    },
                                    messages: {
                                        userName: {
                                            required: "* required",
                                            minlength: jQuery.validator.format("At least {0} characters required!")
                                        }
                                    }
                                });
                                var status = $("#register").find(':input').valid();
                                if (status == false) {
                                    alert('Invalid form!');
                                    return false;
                                }

                                var formData = {};
                                $('#register').find(':input').each(function () {
                                    formData[this.name] = this.value;
                                });
                                var json = JSON.stringify({ NewMember: formData });
                                $.ajax({
                                    url: "Services/members.asmx/ValidateUser",
                                    timeout: 30000,
                                    type: 'post',
                                    data: json,
                                    dataType:'json',
                                    contentType: "application/json; charset=utf-8",
                                    error: function (returner, textStatus, errorThrown) {
                                        if (textStatus == "error") {
                                            $("#spStatus").css('class', 'textRed')
                                                .text("Oops!! : " + returner.status
                                            + " " + returner.statusText);
                                        }
                                    },
                                    success: function (data) {
                                        $("#spStatus").css('class', 'textGreen').text(response.Reply);
                                        //$(this).dialog("close");
                                    }
                                })
                            }
                        },
                        {
                            class: "lastButton",
                            text: "Maybe Later",
                            click: function () {
                                $(this).dialog("close");
                            }
                        }
                    ]
            });
        });
    </script>

[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public string ValidateUser(Registrant NewMember)
{
    EnrollResponse r = new EnrollResponse("400","Invalid User Name Selected");
    return JsonConvert.SerializeObject(r);
}