Media Lib selector

<?php
add_action('admin_print_scripts', 'tsnPublishers_admin_scripts');
add_action('admin_print_styles', 'tsnPublishers_admin_styles');
function tsnPublishers_admin_scripts() {
    wp_enqueue_script('media-upload');
    wp_enqueue_script('thickbox');
    wp_enqueue_script('jquery');
}
function tsnPublishers_admin_styles() {
    wp_enqueue_style('thickbox');
}
?>
<script type="text/javascript">
        jQuery(document).ready(function() {
            jQuery('#userimage_button').click(function() {
                formfield = jQuery('#userimage').attr('name');
                tb_show('', 'media-upload.php?type=image&TB_iframe=true');
                return false;
            });
            window.send_to_editor = function(html) {
                imgurl = jQuery('img',html).attr('src');
                jQuery('#userimage').val(imgurl);
                tb_remove();
            }
        });
</script>
<input id="userimage" type="text" name="userimage" value="" />
<input id="userimage_button" type="button" value="Upload Image" />