So, I'm having difficulty trying to append/add a child div to the parent div, and thought someone out here may know the best way for me to go about this.  I have attached my code (without PHP right now, just hard coding text and stuff).  But here is what I am trying to do:
When a message is posted, you hit the "Reply Button" and a new div will appear underneath containing the reply form.
Right now, here are the issues I know about and can't get around:
The DIV is a class, so when I use jQuery to try to target the DIV it targets everything since it's no unique.
The Reply Button is also a class, so it's not unique.
Here is a video of it in action: http://tinypic.com/r/2luxwnr/7
HTML
<body>
<div id="content-container">
    <div id="message-viewer">
        <div class="roar">
            <div class="roaractionpanel">
                <div id="msg-business2"></div>
                <div class="roartime"><p class="roartime-text">3:26PM</p></div>
            </div>
            <div class="roarcontent">
                <button type="submit" class="btn-reply"></button>
                <h5>Test Post</h5><br>
                <h6>Lord Varlin</h6><br>
                <h2>Test post... let's see.</h2>
            </div>
        </div>
        <div class="newreply">
            <div class="newreplycontent">
                <h1>This is where the fields for a new reply will go.</h1>
            </div>
        </div>
        <div class="roar">
            <div class="roaractionpanel">
                <div id="msg-business2"></div>
                <div class="roartime"><p class="roartime-text">3:26PM</p></div>
            </div>
            <div class="roarcontent">
                <button type="submit" class="btn-reply"></button>
                <h5>Testing another</h5><br>
                <h6>Lord Varlin</h6><br>
                <h2>Hmm dee dumm...</h2>
            </div>
        </div>
        <div class="roarreply">
             <div class="roarreply-marker">
                <p class="roarreplytime-text">June 26th @ 4:42AM</p>
             </div>
             <div class="roarreplycontent">
                <h9>Testing a reply.  Hmmmm.</h9><br>
                <h8>Lord Varlin</h8>
             </div>
        </div>
        <div class="newreply">
            <div class="newreplycontent">
                <h1>This is where the fields for a new reply will go.</h1>
            </div>
        </div>
        <div class="roar">
            <div class="roaractionpanel">
                <div id="msg-business2"></div>
                <div class="roartime"><p class="roartime-    text">3:26PM</p></div>
            </div>
            <div class="roarcontent">
                <button type="submit" class="btn-reply"></button>
                <h5>Testing another</h5><br>
                <h6>Lord Varlin</h6><br>
                <h2>jQuery, work with me please.</h2>
            </div>
        </div>
        <div class="roarreply">
             <div class="roarreply-marker">
                <p class="roarreplytime-text">June 26th @ 4:42AM</p>
             </div>
             <div class="roarreplycontent">
                <h9>Testing a reply.  Hmmmm.</h9><br>
                <h8>Lord Varlin</h8>
             </div>
        </div>
        <div class="roarreply">
             <div class="roarreply-marker">
                <p class="roarreplytime-text">June 26th @ 4:42AM</p>
             </div>
             <div class="roarreplycontent">
                <h9>Testing a reply.  Hmmmm.</h9><br>
                <h8>Lord Varlin</h8>
             </div>
        </div>
        <div class="newreply">
            <div class="newreplycontent">
                <h1>This is where the fields for a new reply will go.</h1>
            </div>
            </div>
        </div>
    </div>
    </body>
JQUERY
$(".btn-reply").click(function() {
    $(".newreply").toggleClass("show");
    return false;
 });
So, I see the flaws, but I just can't wrap my head around how to pull this off!  Any guidance would be awesome!  :)