anchor.diff:  		  <%= f.hidden_field :person_id %>
   		  <%= f.hidden_field :display_name %>
   		  <div>
  -		  	<%= f.submit "Send", class: 'btn btn-default', style: 'margin-top:5px;' %>
  +		  	<%= f.submit "Send", id: 'message_submit', class: 'btn btn-default', style: 'margin-top:5px;' %>
   		  </div>
   		<% end %> 
   	</div>
  
positive.code: 			presence += "</ul>";
  			presence += "<small>Everyone offline will be emailed</small>";
  			$('#presence').html(presence);
  	}
  
  	$('#chatlog').scroll(function(){ 
  
negative.code: <script type="text/javascript">
  	
  	function resize() {
  		$(".left").height(window.innerHeight-$("#chatlog").offset().top - $("#post_area").height() - 15 + 'px');
  		$('#message_body').width(($('#chatlog').width())-30+'px');
  		var height = document.getElementById("chatlog").scrollHeight - $('#chatlog').height(); 
  		$('#chatlog').scrollTop(height);
  