Remove redundant Posting Mode banner

Also replace JS code that uses them to determine the page type.

js/quick-reply.js

@@ -125,7 +125,7 @@
 	};
 	
 	var show_quick_reply = function(){
-		if($('div.banner').length == 0)
+		if(active_page != 'thread')
 			return;
 		if($('#quick-reply').length != 0)
 			return;
@@ -421,7 +421,7 @@
 	
 	if (settings.get('floating_link', false)) {
 		$(window).ready(function() {
-			if($('div.banner').length == 0)
+			if(active_page != 'thread')
 				return;
 			$('<style type="text/css">\
 			a.quick-reply-btn {\

js/show-op.js

@@ -18,7 +18,7 @@ $(document).ready(function(){
 	var showOPLinks = function() {
 		var OP;
 		
-		if ($('div.banner').length == 0) {
+		if (active_page = 'thread') {
 			OP = parseInt($(this).parent().find('div.post.op a.post_no:eq(1)').text());
 		} else {
 			OP = parseInt($('div.post.op a.post_no:eq(1)').text());

templates/thread.html

@@ -48,8 +48,6 @@
 
 	{% include 'attention_bar.html' %}
 
-	<div class="banner">{% trans %}Posting mode: Reply{% endtrans %}</div>
-
 	{{ config.ad.top }}
 
 	{% include 'post_form.html' %}