diff --git a/public/javascripts/community_hub.js b/public/javascripts/community_hub.js
index 422ad71..201f37b 100644
--- a/public/javascripts/community_hub.js
+++ b/public/javascripts/community_hub.js
@@ -3,8 +3,23 @@ var oldest_post_id = 0;
 live_scroll_position = 0;
 var mediations = [];
 
-function load_more_messages() {
+function load_more(tab) {
+  switch (tab) {
+    case 'live':
+      load_more_messages();
+      break;
+    case 'mediation':
+      load_more_mediations();
+      break;
+  }
+}
+
+
+function load_more_mediations() {i
+  // implement!
+}
 
+function load_more_messages() {
   var hub_id = jQuery(".hub").attr('id');
   var oldest_id = jQuery("#live-posts li.post").last().attr("id");
 
@@ -312,11 +327,28 @@ function hub_right_tab_click() {
 
 first_hub_load = true;
 
-jQuery(".hub .live .envelope").scroll(function() {
+jQuery(".hub .envelope").scroll(function() {
   jQuery("#auto_scrolling").attr('checked', false);
-  if (jQuery(".hub .live .envelope").scrollTop() == (jQuery(".hub ul#live-posts").height() - jQuery(".hub .live .envelope").height() + 23)) {
-    load_more_messages();
+
+  // live stream tab...
+  if (jQuery("#left-tab.show").size() != 0) {
+    current_envelope = jQuery(".hub .live .envelope");
+    current_list_posts = jQuery(".hub ul#live-posts");
+    tab = 'live';
+  }
+  else {
+    // mediation tab...
+    if (jQuery("#right-tab.show").size() != 0) {
+      current_envelope = jQuery(".hub .mediation .envelope");
+      current_list_posts = jQuery(".hub ul#mediation-posts");
+      tab = 'mediation';
+    }
+  }
+
+  if (current_envelope.scrollTop() == (current_list_posts.height() - current_envelope.height() + 23)) {
+    load_more(tab);
   }
+
 });
 
 
diff --git a/public/style.css b/public/style.css
index e85ebdc..4199f8d 100644
--- a/public/style.css
+++ b/public/style.css
@@ -122,7 +122,7 @@
 
 .hub .mediation-bar ul li.pin {
 	height: 25px;
-  margin-right: 15px;
+  /*margin-right: 15px;*/
 }
 
 .hub .remove{}
@@ -175,35 +175,40 @@
 }
 
 .hub .envelope {
-/*  height: 500px;
+  height: 500px;
   overflow-x: hidden;
-  overflow-y: scroll;*/
+  overflow-y: scroll;
 	margin-top: -1px;
-	border-top: 1px solid lightgray;
-	display: inline-block;
+	border: 1px solid lightgray;
+  /*border-bottom: 1px solid lightgray;
+  border-left: 1px solid lightgray;*/
+	/*display: inline-block;*/
 	width: 100%;
 }
 
 .hub ul#live-posts, .hub ul#mediation-posts{
-	border-width: 0 1px 1px;
-	border-style: solid;
-	border-color: lightGray;
+	/*border-width: 0 1px 1px;*/
+	/*border-style: solid;*/
+	/*border-color: lightGray;*/
+  border-bottom: 1px solid lightgray;
 	padding-top: 10px;
-    clear: both;
-	height: 475px;
-	overflow-y: scroll;
+  /*clear: both;*/
+	/*height: 475px;*/
+	/*overflow-y: scroll;*/
 
 }
 
 /*modificação da scroll bar*/
+.hub div.envelope::-webkit-scrollbar-button /*,
 .hub ul#live-posts::-webkit-scrollbar-button,
-.hub ul#mediation-posts::-webkit-scrollbar-button {
+.hub ul#mediation-posts::-webkit-scrollbar-button */ {
 	height: 0;
 	width: 0;
 }
 
+.hub div.envelope::-webkit-scrollbar-thumb /*,
 .hub ul#live-posts::-webkit-scrollbar-thumb,
-.hub ul#mediation-posts::-webkit-scrollbar-thumb{
+.hub ul#mediation-posts::-webkit-scrollbar-thumb */ {
 	background-clip: padding-box;
 	background-color: rgba(0,0,0,.3);
 	border: 5px solid transparent;
@@ -214,8 +219,9 @@
 	width: 5px;
 }
 
+.hub div.envelope::-webkit-scrollbar /*,
 .hub ul#live-posts::-webkit-scrollbar,
-.hub ul#mediation-posts::-webkit-scrollbar {
+.hub ul#mediation-posts::-webkit-scrollbar */ {
 	height: 15px;
 	width: 15px;
 }
--
libgit2 0.21.2