Codeigniter jquery

I need your help. I have a problem with dropdown value. I can't save value from dropdown list,which has appeared.

I did everything like this example, but I have appearing , not . And the problem is - I cant save value I chosen. I need this value for insert into my database.What must I change here?

[http://jsfiddle.net/Bksk7/2/]

myview.php

<script>
$(function() {
$(".forms").hide();
$("#type").change(function() 
{
    var e = $(this).val();
    if(e == 1 || e == 2) //for example, I have 2 another dropdown
    {
        $(".forms").hide().parent().find('#' + e).show();
    }
});

$('#submit').click(function(e)
{
    e.preventDefault();

    var resolve_data = function() {
        var output = {};
        $('.form-active select, .default select').each(function() 
        {
            output[$(this).attr('value')] = $(this).val();
        });
        return output;
    };
 });
});

</script>

<form action="http:/../insertdata" method="post"> 
<table class="main">
...
<select name="type" id="type"> //it works clear__ dropdown #1
    <?php
    $selected_1 = 'selected="selected"';
    $selected_2 = '';

    foreach ($types as $item) 
    {
        $id=$item['type_id'];
        $selected = $selected_2;
        if (isset($_POST['type']) && $_POST['type'] == $id)
        $selected = $selected_1;
        echo '<option value="'.$id.'" ' . $selected . '>'.$item['title'].'</option>';
    }       

    ?>
    </select>
....
<tr class="forms" id="1">
<td>
Введите категорию:
</td>
<td>
<select name="kategory"  >    //___dropdown #2
    <?php
    $selected_1 = 'selected="selected"';
    $selected_2 = '';

    foreach ($categories1 as $item) 
    {
        $id=$item['id'];
        $selected = $selected_2;
        if (isset($_POST['kategory']) && $_POST['kategory'] == $id)
        $selected = $selected_1;
        echo '<option value="'.$id.'" ' . $selected . '>'.$item['title'].'</option>';
    } 
    ?>

    </select>
</td>
</tr>

//and another the same
<tr class="forms" id="2">
<td>
Введите категорию:
</td>
<td>
<select name="kategory"  >   //__dropdown #3
    <?php
    $selected_1 = 'selected="selected"';
    $selected_2 = '';

    foreach ($categories2 as $item) 
    {
        $id=$item['id'];
        $selected = $selected_2;
        if (isset($_POST['kategory']) && $_POST['kategory'] == $id)
        $selected = $selected_1;
        echo '<option value="'.$id.'" ' . $selected . '>'.$item['title'].'</option>';
    } 
    ?>

    </select>
</td>
</tr>
....
<input type="submit" id="submit" "name="add" value="Добавить" />
</form>

controller insertdata.php

....
//I do this for values from dropdown #2 and #3
$add['categories1']=$this->ych_material_model->get_categories('programmnie');
$add['categories2']=$this->ych_material_model->get_categories('teoreticheskie');

And thats all right, but when I call .... $add['kategory']=$this->input->post('kategory');

in controller, it give me '1'.