it is not submitted please find out problem

<?php
include "db.php";
include "header.php";
include "banner.php";
include "left_area.php";

session_start();

?>
<!-- my code datepicker code generated here mallesh -->

<link rel="stylesheet" href="images/images/main.css">
                    <script type="text/javascript" language="javascript" src="images/images/prototype-1.js"></script>
            <script type="text/javascript" language="javascript" src="images/images/prototype-base-extensions.js"></script>
            <script type="text/javascript" language="javascript" src="images/images/prototype-date-extensions.js"></script>
            <script type="text/javascript" language="javascript" src="images/images/behaviour.js"></script>
                            <script type="text/javascript" language="javascript" src="images/images/datepicker.js"></script>
                                        <link rel="stylesheet" href="images/images/datepicker.css">
                            <script type="text/javascript" language="javascript" src="images/images/behaviors.js"></script>

<!--   End ......................... here -->

<!--<script language="javascript" type="text/javascript" src="datetimepicker.js">

//Date Time Picker script- by TengYong Ng of http://www.rainforestnet.com
//Script featured on JavaScript Kit (http://www.javascriptkit.com)
For this script, visit http://www.javascriptkit.com -->

</script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
    window.$required = $('<div></div>').dialog({
        autoOpen: false,
        title: 'Required Information'
    });
});

</script>

<script type="text/javascript">
$(document).ready(function(){
$("#register").submit(function(){


email=$("#email").val();
pwd=$("#pwd").val();
rpwd=$("#rpwd").val();
name=$("#name").val();
//alert(name);
birth=$("#birth").val();
alert(birth);
country=$("#country").val();
address=$("#address").val();
lcaddress=$("#lcaddress").val();
state=$("#state").val();
city=$("#city").val();
about=$("#about").val();
phone=$("#phone").val();
//alert(phone);
letterscode=$("#letterscode").val();
checkbox=$("#checkbox").val();

var emailReg = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
if($("#email").val() == "") {
$required.html("User name field is required.").dialog('open');
$("#email").focus()
return false;
}
if(!emailReg.test($("#email").val())) {
$required.html("Invalid mail address.Mail id should have (ex:sss@gmail.com)").dialog('open');
return false
}

if($("#pwd").val() == "") {
$required.html("password field is required.").dialog('open');
$("#pwd").focus()
return false;
}
if($("#rpwd").val() == "") {
$required.html("Re-type password field is required.").dialog('open');
$("#rpwd").focus()
return false;
}
if($("#pwd").val() != $("#rpwd").val())
{
$required.html("Re-type password not matched.").dialog('open');
$("#rpwd").focus()
return false;
}

if($("#name").val() == "") {
$required.html("Name field is required.").dialog('open');
$("#name").focus()
return false;
}


if($("#birth").val() == "") {
$required.html("Date of birth field is required.").dialog('open');
$("#birth").focus()
return false;
}
if($("#country").val() == "") {
$required.html("country field is required.").dialog('open');
$("#country").focus()
return false;
}

if($("#address").val() == "") {
$required.html("address field is required.").dialog('open');
$("#address").focus()
return false;
}

if($("#lcaddress").val() == "") {
$required.html("Local contact address field is required.").dialog('open');
$("#lcaddress").focus()
return false;
}

if($("#state").val() == "") {
$required.html("State field is required").dialog('open');
$("#state").focus()
return false;
}

if($("#city").val() == "") {
$required.html("City field is required...").dialog('open');
$("#city").focus()
return false;
}

if($("#phone").val() == "") {
$required.html("Phone field is required..").dialog('open');
$("#phone").focus()
return false;
}
filter = /^[0-9-+]+$/;
    if (!(filter.test($("#phone").val())))
    {
     $required.html("please enter numbers only .").dialog('open');
     $("#phone").focus()
     return false;
     }


if($("#about").val() == "") {
$required.html("about field is required..").dialog('open');
$("#about").focus()
return false;
}

if($("#letterscode").val() == "") {
$required.html("captcha (6 letters code) feild is required.").dialog('open');
$("#letterscode").focus()
return false;
}



if (!($("#checkbox").is(":checked"))) {
$required.html("checked field is required..").dialog('open');
return false;
}



$.ajax({
type: "POST",
url: "register_get.php",
data: {

email: email,
pwd: pwd,
name: name,
birth: birth,
country: country,
address: address,
lcaddress: lcaddress,
state: state,
city: city,
phone: phone,
about: about,
letterscode: letterscode


},
success: function(msg){

if(msg == 1) {
//alert(msg);
 location="registerd.php";



}

else if(msg == 0) {
//alert(msg);
$required.html("captcha code doesn't match .").dialog('open');

}

else  {
//alert(msg);
$required.html("registered email alredy existed .").dialog('open');

}
}
});
return false;
});

return true
});
</script>








<td align="left" valign="top" id="inner-txt-padding"><div  id="inner-title-bg1"><span id="title">Registration</span></div>
<div id="service-page-bg">
<!--Content Area-->
<form name="register" id="register" method="post"  >

<table width="100%" cellspacing="5">
<tr><td>Email Id *</td><td><input type="text" name="email" id="email" size="30" value='<?php echo htmlentities($email) ?>'></td></tr>
<tr><td>Password *</td><td><input type="password" name="pwd" id="pwd" size="30" value='<?php echo htmlentities($pwd) ?>'></td></tr>
<tr><td>Re-type Password *</td><td><input type="password" name="rpwd" id="rpwd" size="30" value='<?php echo htmlentities($rpwd) ?>'></td></tr>
<tr><td>Full Name *</td><td><input type="text" name="name" id="name" size="30" value='<?php echo htmlentities($name) ?>'></td></tr>
<tr><td>Date Of Birth *</td><td>
<input type="text"  maxlength="25" size="20" name="birth" id="birth" class="datepicker" value='<?php echo htmlentities($birth) ?>'>
</td></tr>
<tr><td>Country Of Residence *</td><td><input type="text" name="country" id="country" size="30" value='<?php echo htmlentities($country) ?>'></td></tr>
<tr><td>Address </td><td><textarea cols="25" rows="5" name="address" id="address" ><?php echo htmlentities($address) ?></textarea></td></tr>
<tr><td>Local Contact Address *</td><td><textarea cols="25" rows="5" name="lcaddress" id="lcaddress"><?php echo htmlentities($lcaddress) ?></textarea></td></tr>
<tr><td>State *</td><td><input type="text" name="state" id="state" size="30" value='<?php echo htmlentities($state) ?>'></td></tr>
<tr><td>City *</td><td><input type="text" name="city" id="city" size="30" value='<?php echo htmlentities($city) ?>'></td></tr>
<tr><td>Phone *</td><td><input type="text" name="phone" id="phone" size="30" value='<?php echo htmlentities($phone) ?>'></td></tr>
<tr><td>How did you hear about us? *</td><td><input type="text" name="about" id="about" size="30" value='<?php echo htmlentities($about) ?>'></td></tr>
<tr><td>Security Code *</td><td><input id="letterscode" name="6_letters_code" type="text"></td></tr>
<tr><td>&nbsp;</td><td><img src="captcha_code_file.php?rand=<?php echo rand(); ?>" id='captchaimg' name="captchaimg"></td></tr>
<tr><td>&nbsp;</td><td><input type="checkbox" id="checkbox" name="checkbox"> I accept the <a href="#">Terms & Conditions</a></td></tr>
<tr><td>&nbsp;</td><td><input type="submit" value="SUBMIT" name="submit">&nbsp;&nbsp;<input type="reset" value="RESET"></td></tr>
</table>

</form>







<!-- Close Content Area -->
</div>
<!--After Content add this -->
            </td>
          </tr>
        </table></td>
      </tr>



<?php
include "footer.php";
?>