Fix changed thread display options

[nrms?]

Hello all,
I'm trying to change the default position of the option of presenting the topics. For versions prior to vb4.x it was easy to get there and even here in vbulletin.org topics explaining how to make this change.

My problem is that after changing the position to the top of the list of topics, works well when there is no sub-forums to present, there is a large black area, such as you can see the images attached.

I think generally for users of vb this modification would be very useful, so I ask for your help ...

Part of the original code used (FORUMDISPLAY):

PHP Code:

<vb:if condition="$show['threadslist']">

    <div class="collapse">
        <a class="collapse" id="collapse_forum_options" href="{vb:raw  relpath}#top"><img src="{vb:stylevar  imgdir_button}/collapse{vb:raw  vbcollapse.collapseimg_info_options}_40b.png" alt="" /></a>
        <h4 class="forumoptiontitle blockhead">{vb:rawphrase thread_display_options}</h4>
    </div>
    <div id="forum_options" class="forum_info_form_block">
        <form id="forum_display_options" action="{vb:raw  $vboptions.vbforum_url}{vb:if "$vboptions['vbforum_url']", '/',  ''}forumdisplay.php" method="get" class="forum_info_form blockbody  formcontrols floatcontainer">
            <input type="hidden" name="s" value="{vb:raw session.sessionhash}" />
            <input type="hidden" name="f" value="{vb:raw forumid}" />
            <input type="hidden" name="page" value="{vb:raw pagenumber}" />
            <input type="hidden" name="pp" value="{vb:raw perpage}" />
            <div>
                <div class="options_input_block">
                    <label for="sel_daysprune">{vb:rawphrase show_threads_from_the}</label>
                    <select class="primary" id="sel_daysprune" name="daysprune">
                        <option value="1" {vb:raw daysprunesel.1}>{vb:rawphrase last_day}</option>
                        <option value="2" {vb:raw daysprunesel.2}>{vb:rawphrase last_2_days}</option>
                        <option value="7" {vb:raw daysprunesel.7}>{vb:rawphrase last_week}</option>
                        <option value="10" {vb:raw daysprunesel.10}>{vb:rawphrase last_10_days}</option>
                        <option value="14" {vb:raw daysprunesel.14}>{vb:rawphrase last_2_weeks}</option>
                        <option value="30" {vb:raw daysprunesel.30}>{vb:rawphrase last_month}</option>
                        <option value="45" {vb:raw daysprunesel.45}>{vb:rawphrase last_45_days}</option>
                        <option value="60" {vb:raw daysprunesel.60}>{vb:rawphrase last_2_months}</option>
                        <option value="75" {vb:raw daysprunesel.75}>{vb:rawphrase last_75_days}</option>
                        <option value="100" {vb:raw daysprunesel.100}>{vb:rawphrase last_100_days}</option>
                        <option value="365" {vb:raw daysprunesel.365}>{vb:rawphrase last_year}</option>
                        <option value="-1" {vb:raw daysprunesel.all}>{vb:rawphrase beginning}</option>
                    </select>
                    <p class="description">{vb:rawphrase use_control_to_limit_threads}</p>
                </div>
                <div class="options_input_block">
                    <label for="sel_sort">{vb:rawphrase sort_threads_by}</label>
                    <select class="primary" id="sel_sort" name="sort">
                        <option value="title" {vb:raw sort.title}>{vb:rawphrase thread_title}</option>
                        <option value="lastpost" {vb:raw sort.lastpost}>{vb:rawphrase last_post_time}</option>
                        <option value="dateline" {vb:raw sort.dateline}>{vb:rawphrase thread_start_time}</option>
                        <option value="replycount" {vb:raw sort.replycount}>{vb:rawphrase number_of_replies}</option>
                        <option value="views" {vb:raw sort.views}>{vb:rawphrase number_of_views}</option>
                        <option value="postusername" {vb:raw sort.postusername}>{vb:rawphrase thread_starter}</option>
                        <vb:if condition="$show['threadratings']"><option  value="voteavg" {vb:raw sort.voteavg}>{vb:rawphrase  thread_rating}</option></vb:if>
                    </select>
                    <p class="description">{vb:rawphrase sort_threads_by_description}</p>
                </div>
                <vb:if condition="$prefix_options">
                <div class="options_input_block">
                    <label for="sel_prefixid">{vb:rawphrase prefix}</label>
                    <select name="prefixid" class="primary" id="sel_prefixid">
                        <option value="" {vb:raw prefix_selected.anythread}>{vb:rawphrase any_thread_meta}</option>
                        <option value="-2" {vb:raw prefix_selected.anyprefix}>{vb:rawphrase any_prefix_meta}</option>
                        <option value="-1" {vb:raw prefix_selected.none}>{vb:rawphrase no_prefix_meta}</option>
                        {vb:raw prefix_options}
                    </select>
                    <p class="description">{vb:rawphrase select_threads_with_prefix_description}</p>
                </div>
                </vb:if>
                <!-- Group of Radio Buttons -->
                <div class="options_input_block">
                    <p class="label">{vb:rawphrase order_threads_in}</p>
                    <ul class="checkradio group">
                        <li><label for="radio_asc"><input type="radio"  name="order" id="radio_asc" value="asc" {vb:raw order.asc} />  {vb:rawphrase ascending}</label></li>
                        <li><label for="radio_dsc"><input type="radio"  name="order" id="radio_dsc" value="desc" {vb:raw order.desc} />  {vb:rawphrase descending}</label></li>
                    </ul>
                    <p class="description">{vb:rawphrase order_threads_note}</p>
                </div>
                {vb:raw template_hook.forumdisplay_filters}
            </div>
            <div class="options_input_wrapper">
                <div class="options_input_block">
                    <div class="group">
                        <input type="submit" class="button" value="{vb:rawphrase show_threads}" />
                    </div>
                </div>
            </div>
        </form>
    </div>
    </vb:if> 


Moved right after the section of code:

PHP Code:

{vb:raw template_hook.forumdisplay_below_subforums}
</vb:if> 


Images of support:
> http://i47.tinypic.com/eisc37.jpg
> http://i48.tinypic.com/5vuo2b.jpg
> http://i49.tinypic.com/ka5uoo.jpg (after apply mod)

Greetings from Portugal ...