提交表单后不会存储会话值

Question

这是我的查询表单代码...在IE上提交表单后没有存储会话表格没有保留谷歌浏览器中的值，这很好..所有表单中的字段都在提交后清空.i想要在验证码不正确时存储值。 任何人都可以帮助

                <?php
                session_start();
                ob_flush();

                include("header.php");

                 if(isset($_POST["Submit"]))    
                 {

                    if ($_POST["vercode"] != $_SESSION["vercode"] OR $_SESSION["vercode"]=='')
                    { 
                        $msg="Incorrect verification code";

                        $ssubject   =   $_POST['Subject'];
                        $name       =   $_POST['name'];
                        $address    =   $_POST['address'];


                        $_SESSION['Subject']    =   $ssubject;
                        $_SESSION['name']       =   $name;
                        $_SESSION['address']    =   $address;


                    }
                    else
                    {
                    $email_to="abc@gmail.com";

                    $ssubject   =   $_POST['Subject'];
                    $name       =   $_POST['name'];
                    $address    =   $_POST['address'];


                    $to     =       $email_to;

                    $subject="Message from my Website Inquiry"." ".date("D dS M,Y h:i a");

                    $header="from: craze $email";

                    $messages= "INQUIRY\r\n\r\nSUBJECT: $ssubject\r\n\r\nNAME: $name \r\n\r\nADDRESS: $address \r\n\r";

                    $sentmail = mail($to,$subject,$messages,$header);

                    if($sentmail)
                    {

                        $success="Your Contact Details Has Been Sent To Administrator Address.";
                        unset($_SESSION['Subject']);
                        unset($_SESSION['name']);
                        unset($_SESSION['address']);


                    }

                    }
                }
                ?>
                    <form id="form1"  name="email_check" onSubmit="return validateForm()" method="post" action="">
                        <select name="Subject">
                        <option value="Complaint">Complaint</option>
                        <option value="Appointment Request" selected="selected">Appointment Request</option>
                        <option value="Doctors inquiry">Doctor's Inquiry</option>
                        <option value="Service Inquiry">Service Inquiry</option>
                        <option value="Other">Other</option>
                        </select>


                        <input name="name" class="text_box" type="text" value="<?php echo $_SESSION['name'];?>"/>
                        <textarea class="text_boxlarge" name="address"><?php echo $_SESSION['address'];?></textarea>
             <div class="namepart"><h5>Enter Code</h5></div>
        <div class="tex_part">
            <img src="captcha.php">
            <input type="text" name="vercode" 
          class="text_box" style="width:120px;margin-top:16px;" /> 
        </div>
        </div>

                        <input name="Submit"  type="image" src="images/submit_burron1.jpg"  height="20" width="54" value="Submit" />
                        <input name="cancel" type="image" src="images/reset_button.jpg" height="20" width="54" usemap="#Map2Map" />
                    </form>