form to subscript a newsletter then send email for confirmation issue

form to subscript a newsletter then send email for confirmation issue

I try to create form to subscript a newsletter using plugins and the $.post() function ,but the URL outside  the server http://rissc.jo/mailings/subscribe.php to send me an email if it receives the data but it doesn't work,
here is the code <html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>jQuery validation plug-in - main demo</title>

<link rel="stylesheet" type="text/css" media="screen" href="css/screen.css" />

<script src="../lib/jquery.js" type="text/javascript"></script>
<script src="../jquery.validate.js" type="text/javascript"></script>
<script src="../jquery.form.js" type="text/javascript"></script>
<script type="text/javascript">

$.validator.setDefaults({
submitHandler: function() { $("form#signupForm").submit(function ()
  {
    if(!isEmail($("#email").val() ))
     {
     $("p.idmsg").html('<span class="error">Please enter a valid email address</span>').hide().fadeIn("slow");
      }
     else{
     $.post($("form#signupForm").attr("action"),{ email:$("#email").val()},function(data)
             { $('p.idmsg').html('<span class="success">Thanks for signing up! Please check your email for confirmation!</span>').hide().fadeIn("slow");//alert("server return " + data);
             });
        }
         return false;
 }); }
});

$().ready(function() {
    $("input[type=text]").click(function(aw){
    $(this).attr("value","");
    });
   
//----------------------------------------------------------------------------------------------
 $("#FormButton_Subscribe").click(function() {
               //if the form is valid according to the fules
               if ($("#signupForm").valid()) {
                     
                        //Submit the form via AJAX
                        $('#signupForm').ajaxForm(function() {
                   
                            //this alert lets me know the submission was successfull
                        alert("Thank you!"); });
                      }
                        var name = $('input[name=firstname]');
                        var email = $('input[name=email]');
                        var data = 'name=' + name.val() + '&email=' + email.val();
                   
                    $.ajax({
                        //this is the php file that processes the data and send mail
                        url: "http://baptismsite.mac/ajaxform/process.php",   
                   
                            //GET method is used
                            type: "POST",

                            //pass the data           
                        data: data,       
           
                            //Do not cache the page
                            cache: false,
           
                            //success
                            success: function () {
                            if (html==1) {                   
                            //hide the form
                            $('#signupForm').fadeOut('slow');                   
                   
                            //show the success message
                            $('.done').fadeIn('slow');
                            }
                            else if(html==2){}
                            else if(html==3){}
                            else if(html==4){}
                            //if process.php returned 0/false (send mail failed)
                             else alert('Sorry, unexpected error. Please try again later.');           
                    }       
            });
       
        //cancel the submit button default behaviours
                    return false;
                })
//----------------------------------------------------------------------------------------------
 $("#signupForm").ajaxForm(function() {
        alert("Thank you for your comment!");
      });

// validate signup form on keyup and submit
$("#signupForm").validate({
        rules: {
            firstname: "required",
           
            email: {
                required: true,
                email: true
            },
            },
        messages: {
            firstname:"Please enter your firstname",
            email: "Please enter a valid email address",
            }
            });
        submitHandler : function(form){
            alert("woow i reached hear");
                $(form).ajaxsubmit({
                    target: ".done"
                    });
                   
                    };
                   
});

</script>
<style>
.done {
    background:url(iconIdea.gif) no-repeat 2px;
    padding-left:20px;
    font-family:arial;
    font-size:12px;
    width:70%;
    margin:20px auto;
    display:none
}
</style>
</head>
<body>
<div id="o-form">

<div class="done"></div>

 <div class="o-form-header">
    <h2 id="o-form-title">NewsLetter Subsribtion:</h2>
    <p id="o-form-description">

sign up to our newsletter and learn about the latest discoveries ,excavations, developments, and offers to the Holy sites of Jordan.</p>
</div>
<form class="o-form"  id="signupForm" action="http://rissc.jo/mailings/subscribe.php" method="post" accept-charset="UTF-8">
<div class="o-form-row">
    <p> <input type="text" name="firstname" value="First Name" id="firstname" class="required"></p></div>
<div class="o-form-row">
    <p> <input type="text" name="email" value="Email" id="email" class="required"></p></div>
    <div class="o-form-row">
    <p> <input type="submit" class="submit" name="submit" value="SIGN ME UP!" id="FormButton_Subscribe"></p></div>
   <input type="hidden" name="FormValue_ListID" value="12">
   <input type="hidden" name="FormValue_Command" value="Subscriber.Add" id="FormValue_Command">
</form>
<P id="o-form-description"></br>We only send 1-4 emails a year, end never ever share your email with others.</P>
</div>

<script src="http://www.google-analytics.com/urchin.js" type="text/javascript">
</script>
<script type="text/javascript">
_uacct = "UA-2623402-1";
urchinTracker();
</script>
</body>
</html>


thank you very much