dynamic uploader for wordpress

/* TEXT UPLOADER FOR TEXT PAGES */

add_action( 'add_meta_boxes', 'add_custom_text_box' );

/* Do something with the data entered */
add_action( 'save_post', 'save_text_postdata' );


/* Adds a box to the main column on the Post and Page edit screens */
function add_custom_text_box() {

        add_meta_box(
        'dynamic_sectionid',
        __( 'Text Contents', 'myplugin_textdomain' ),
        'inner_text_custom_box',
        'sc_text');

}

/* Prints the box content */
function inner_text_custom_box() {
    global $post;
    // Use nonce for verification
    wp_nonce_field( plugin_basename( __FILE__ ), 'dynamicMeta_noncename' );
    ?>
    <div id="meta_inner">
    <ul>

    <?php
    //get the saved meta as an array
    $images = get_post_meta($post->ID,'images',true);

    $c = 0;
    if(is_array($images)){
        foreach($images as $image ){
            if (isset($image['url'])){
                echo '<li>
                <span class="description">Link Text </span>
                <input class="title" type="text" name="images['.$c.'][link_text]" value="'.$image['link_text'].'" /><br/>

                <span class="description">Link URL </span>
                <input class="year" type="text" name="images['.$c.'][link_url]" value="'.$image['link_url'].'" /><br/>

                <span class="description">Subtext </span>
                <input class="materials" type="text" name="images['.$c.'][subtext]" value="'.$image['subtext'].'" /><br/>

                <span class="description">Image </span>
                <input class="upload" type="text" name="images['.$c.'][url]" value="'.$image['url'].'" />

                <input type="button" name="uploadbutton'.$c.'" id="uploadbutton'.$c.'" class="uploadbutton" value="insert image" />

                <img src="'.$image['url'].'" width="70" height="auto" />

                <span class="remove"><input type="button" name="remove" id="remove" value="remove" /></span>

                </li>';
                $c = $c +1;
            }

            if ( $c == 1 )
                    break;
        }
    }

    ?>
<span id="here"></span>
<span class="add"><?php echo __('<input type="button" name="addimage" id="addimage" value="add image" />'); ?></span>
<script>
    var $ =jQuery.noConflict();
    $(document).ready(function() {
        var count = <?php echo $c; ?>;

        if (count == 1){
            $(".add").hide();
        }


        $(".add").click(function() {

            $(".add").hide();
            count = count + 1;

            $('#here').append('<li><span class="description">Link Text </span><input class="title" type="text" name="images['+count+'][link_text]" value="" /><br/><span class="description">Link URL </span><input class="year" type="text" name="images['+count+'][link_url]" value="" /><br/><span class="description">Subtext </span><input class="materials" type="text" name="images['+count+'][subtext]" value="" /><br/><span class="description">Image </span><input class="upload" type="text" name="images['+count+'][url]" value="" /><input type="button" name="uploadbutton'+count+'" id="uploadbutton'+count+'" class="uploadbutton" value="insert image" /><img src="http://dummyimage.com/100x30/ddd/ddd" width="100" height="auto" /><span class="remove"><input type="button" name="remove" id="remove" value="remove" /></span></li>' );

            return false;
        });
        $(".remove").live('click', function() {
            $(this).parent().remove();
        });

        var uploadID = '';
        var thumbsrc = '';

        jQuery('.uploadbutton').live('click', function() {
            uploadID = jQuery(this).prev('input');
            thumbsrc = jQuery(this).next('img');
            formfield = jQuery('.upload').attr('name');

            tempsendtoeditor = window.send_to_editor; // store it for after

            window.send_to_editor = function(html) {
                imgurl = jQuery('img',html).attr('src');
                uploadID.val(imgurl);
                thumbsrc.attr('src', imgurl );
                tb_remove();
                window.send_to_editor = tempsendtoeditor; // restore it to original
            };

            tb_show('', 'media-upload.php?type=image&amp;TB_iframe=true');
            return false;
        });



    });
</script>

        <script type="text/javascript">
            jQuery(document).ready(function() {
                jQuery("#meta_inner").sortable({
                    'tolerance':'intersect',
                    'cursor':'pointer',
                    'items':'li',
                    'placeholder':'placeholder',
                    'nested': 'ul'
                });
            });
        </script>

   </ul>
</div>

<!-- /* STYLES */ -->
<style type="text/css">
#meta_inner ul { margin-left:0px; list-style: none; }
#meta_inner li { padding: 2px 0px 2px 5px; margin: 4px 0px;  border: 1px solid #DDDDDD; cursor: move; -moz-border-radius:6px; clear: both; height: 100px; position: relative;}
#meta_inner li span.description { float: left; padding: 5px 0 0 0; width: 60px;}
#meta_inner input {margin-right: 5px;}
#meta_inner input.upload, #meta_inner input.title, #meta_inner input.year, #meta_inner input.materials {width: 400px;}
#meta_inner { list-style-type: none; margin: 10px 0 0 0; padding: 0; width: 100%; }
#meta_inner li img {position: absolute; top: 5px; right: 5px;}
#meta_inner li.placeholder{border: dashed 2px #ccc;background-color:#FFF;height:20px;}
#meta_inner #remove {float: right;}
</style>

<?php

}

/* When the post is saved, saves our custom data */
function save_text_postdata( $post_id ) {
    // verify if this is an auto save routine.
    // If it is our form has not been submitted, so we dont want to do anything
    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
        return;
    // verify this came from the our screen and with proper authorization,
    // because save_post can be triggered at other times
    if (isset($_POST['dynamicMeta_noncename'])){
        if ( !wp_verify_nonce( $_POST['dynamicMeta_noncename'], plugin_basename( __FILE__ ) ) )
            return;
    }else{return;}
    // OK, we're authenticated: we need to find and save the data
    $images = $_POST['images'];
    update_post_meta($post_id,'images',$images);
}

?>