diff --git a/src/messenger/webim/js/compiled/default/models/thread.js b/src/messenger/webim/js/compiled/default/models/thread.js
index 18b24242..39f88cbd 100644
--- a/src/messenger/webim/js/compiled/default/models/thread.js
+++ b/src/messenger/webim/js/compiled/default/models/thread.js
@@ -5,4 +5,4 @@
  Copyright (c) 2005-2011 Mibew Messenger Community
  License: http://mibew.org/license.php
 */
-(function(a){a.Models.Thread=a.Models.Base.extend({defaults:{id:0,token:0,lastId:0}})})(Mibew);
+(function(a){a.Models.Thread=a.Models.Base.extend({defaults:{id:0,token:0,lastId:0,state:null},STATE_QUEUE:0,STATE_WAITING:1,STATE_CHATTING:2,STATE_CLOSED:3,STATE_LOADING:4,STATE_LEFT:5})})(Mibew);
diff --git a/src/messenger/webim/js/compiled/default_app.js b/src/messenger/webim/js/compiled/default_app.js
index d691e199..1bbf9bc4 100644
--- a/src/messenger/webim/js/compiled/default_app.js
+++ b/src/messenger/webim/js/compiled/default_app.js
@@ -20,7 +20,7 @@ b.Server.prototype.registerFunction=function(a,b){a in this.functions||(this.fun
 (function(a){a.Models.Control=a.Models.Base.extend({defaults:{title:"",weight:0}})})(Mibew);
 (function(a,b){a.Models.Page=b.Model.extend()})(Mibew,Backbone);
 (function(a,b){a.Models.Sound=b.Model.extend({play:function(a){this.set({file:a});this.trigger("sound:play",this)}})})(Mibew,Backbone);
-(function(a){a.Models.Thread=a.Models.Base.extend({defaults:{id:0,token:0,lastId:0}})})(Mibew);
+(function(a){a.Models.Thread=a.Models.Base.extend({defaults:{id:0,token:0,lastId:0,state:null},STATE_QUEUE:0,STATE_WAITING:1,STATE_CHATTING:2,STATE_CLOSED:3,STATE_LOADING:4,STATE_LEFT:5})})(Mibew);
 (function(a){a.Models.User=a.Models.Base.extend({defaults:{isAgent:!1,name:""}})})(Mibew);
 (function(a,b){a.Collections.Controls=b.Collection.extend({comparator:function(a){return a.get("weight")}})})(Mibew,Backbone);
 (function(b,c,d){b.Views.Control=c.Marionette.ItemView.extend({template:d.templates.default_control,modelEvents:{change:"render"},events:{mouseover:"mouseOver",mouseleave:"mouseLeave"},attributes:function(){var a=[];a.push("control");this.className&&(a.push(this.className),this.className="");var b=this.getDashedControlType();b&&a.push(b);return{"class":a.join(" ")}},mouseOver:function(){var a=this.getDashedControlType();this.$el.addClass("active"+(a?"-"+a:""))},mouseLeave:function(){var a=this.getDashedControlType();
diff --git a/src/messenger/webim/js/source/default/models/thread.js b/src/messenger/webim/js/source/default/models/thread.js
index cb914fb3..4ff5e55b 100644
--- a/src/messenger/webim/js/source/default/models/thread.js
+++ b/src/messenger/webim/js/source/default/models/thread.js
@@ -9,7 +9,7 @@
 (function(Mibew){
     /**
      * Create an instance of thread
-     * @constructor
+     * @class
      */
     Mibew.Models.Thread = Mibew.Models.Base.extend(
         /** @lends Mibew.Models.Thread.prototype */
@@ -36,8 +36,43 @@
                  * Last message id received by the thread
                  * @type Number
                  */
-                lastId: 0
-            }
+                lastId: 0,
+
+                /**
+                 * Thread's state
+                 * @type Number
+                 */
+                state: null
+            },
+
+            /** Thread state constants */
+
+            /**
+             * User in the users queue
+             */
+            STATE_QUEUE: 0,
+            /**
+             * User waiting for operator
+             */
+            STATE_WAITING: 1,
+            /**
+             * Conversation in progress
+             */
+            STATE_CHATTING: 2,
+            /**
+             * Thread closed
+             */
+            STATE_CLOSED: 3,
+            /**
+             * Thread just created
+             */
+            STATE_LOADING: 4,
+            /**
+             * User left message without starting a conversation
+             */
+            STATE_LEFT: 5
+
+            /** End of thread state constants */
         }
     );
 })(Mibew);
\ No newline at end of file