I want to set minimum character for new topic! Please help!

I want to set minimum 100 character for new topic. because some of my forum members creating a topic writing few words. How can i do it?
My forum version- phpbb2
add- www.moneyzone.forumsmotion.com

General>messages & Emails>Configuration
Topics title length :
Change it there.

I feel, 100 is a lot of characters !

I am not saying about topic title. I am talking about body message.

I am afraid, we cannot change it !

Here is the Html + Jquery

Code:

<p class="testlength" style="display:none;">
</p>
<script type="text/javascript">
$(function() {
    if ($("textarea#text_editor_textarea").is(':visible')) {
        $("textarea#text_editor_textarea").keyup(function() {
            var value = $(this).val();
            $("p.testlength").text(value);
        });
        $("input.mainoption").click(function() {
            var num = 100 - $("p.testlength").text().length;
            if (num > 0) {
                alert("The message you have entered is too short. Please lengthen your message to at least 100 characters.");
                return false;
            }
        });
    }
});
</script>

ACP - Display - templates - Post & Private Messages - posting_body: searching the code

Code:

<!-- BEGIN switch_roll_dice -->

then adding that code before it

ACP - Display - templates - ganeral - viewtopic_body: searching the code

Code:

<!-- BEGIN switch_user_logged_in -->
<a name="quickreply"></a>
{QUICK_REPLY_FORM}
<!-- END switch_user_logged_in -->

then adding that code after it

p/s: Does not work with wysiwyg

link removed

battuvuong, thanks for the helpful post! However, please do not post your forum link as a 'fake signature' as this is against our rules. It is considered as advertising your forum, plus signatures are only allowed for staff members. Thank you.

Base wrote:battuvuong, thanks for the helpful post! However, please do not post your forum link as a 'fake signature' as this is against our rules. It is considered as advertising your forum, plus signatures are only allowed for staff members. Thank you.

Sorry, that's not my forum.
My forum is... in my profile.

Your "forum name" in your profile goes to ad.fly. If that isn't against the rules here, it should be.

Ads in my Forum
... I deleted it

battuvuong,

Double Posting:

Posting consecutively is not tolerated unless separated by 24 hours since the last post. In future, please use the edit button.

Please stay on topic and keep any further off-topic discussions to PMs. This message does NOT require a reply.