diff --git a/src/messenger/webim/js/compiled/widget.js b/src/messenger/webim/js/compiled/widget.js
index 7141a5d2..5c0613fa 100644
--- a/src/messenger/webim/js/compiled/widget.js
+++ b/src/messenger/webim/js/compiled/widget.js
@@ -6,12 +6,13 @@
      http://www.apache.org/licenses/LICENSE-2.0
 */
 var Mibew={};
-(function(a){a.Objects={};a.Widget=function(b){this.requestedScripts={};this.handlers=[];this.handlersDependences={};this.requestURL=b.requestURL;this.requestTimeout=b.requestTimeout;this.visitorCookieName=b.visitorCookieName;this.inviteStyle=b.inviteStyle;this.locale=b.locale;this.dataToSend={};var c=document.createElement("link");c.setAttribute("rel","stylesheet");c.setAttribute("type","text/css");c.setAttribute("href",b.inviteStyle);document.getElementsByTagName("head")[0].appendChild(c)};a.Widget.prototype.makeRequest=
-function(){var b=a.Utils.readCookie(this.visitorCookieName);this.dataToSend.entry=escape(document.referrer);this.dataToSend.locale=this.locale;this.dataToSend.rnd=Math.random();!1!==b?this.dataToSend.user_id=b:this.dataToSend.user_id&&delete this.dataToSend.user_id;this.doLoadScript(this.requestURL+"?"+this.getQuery(),"responseScript");this.dataToSend={}};a.Widget.prototype.getQuery=function(){var b=[],c;for(c in this.dataToSend)this.dataToSend.hasOwnProperty(c)&&b.push(c+"="+this.dataToSend[c]);
-return b.join("&")};a.Widget.prototype.sendToServer=function(b){for(var c in b)if(b.hasOwnProperty(c)){var a=b[c];"string"!==typeof a&&"number"!==typeof a||("string"===typeof a&&(a=encodeURIComponent(a)),this.dataToSend[c]=a)}};a.Widget.prototype.onResponse=function(b){var c=b.load,d=b.handlers,e=b.data;b=b.dependences;var j=this,f;for(f in c)c.hasOwnProperty(f)&&!(f in this.requestedScripts)&&(this.requestedScripts[f]={},this.requestedScripts[f].url=c[f],this.requestedScripts[f].status="loading",
-this.loadScript(f));for(var h in b)b.hasOwnProperty(h)&&(h in this.handlersDependences||(this.handlersDependences[h]=b[h]));for(c=0;c<d.length;c++){var g=d[c];if(this.canRunHandler(g))a.APIFunctions[g](e);else g in this.handlers||(this.handlers[g]=function(){a.APIFunctions[g](e)})}this.cleanUpAfterRequest();window.setTimeout(function(){j.makeRequest()},this.requestTimeout)};a.Widget.prototype.cleanUpAfterRequest=function(){document.getElementsByTagName("head")[0].removeChild(document.getElementById("responseScript"))};
-a.Widget.prototype.loadScript=function(b){var c=this,a=this.doLoadScript(this.requestedScripts[b].url,b);a.onload=function(){c.scriptReady(b)};a.onreadystatechange=function(){("complete"==this.readyState||"loaded"==this.readyState)&&c.scriptReady(b)}};a.Widget.prototype.doLoadScript=function(b,c){var a=document.createElement("script");a.setAttribute("type","text/javascript");a.setAttribute("src",b);a.setAttribute("id",c);document.getElementsByTagName("head")[0].appendChild(a);return a};a.Widget.prototype.scriptReady=
-function(b){this.requestedScripts[b].status="ready";for(var a in this.handlers)this.handlers.hasOwnProperty(a)&&this.canRunHandler(a)&&(this.handlers[a](),delete this.handlers[a])};a.Widget.prototype.canRunHandler=function(b){b=this.handlersDependences[b];for(var a=0;a<b.length;a++)if("ready"!=this.requestedScripts[b[a]].status)return!1;return!0};a.Widget.init=function(b){a.Objects.widget=new a.Widget(b);a.Objects.widget.makeRequest()};a.Utils={};a.Utils.createCookie=function(b,a){var d=/([^\.]+\.[^\.]+)$/.exec(document.location.hostname)[1];
-document.cookie=""+b+"="+a+"; path=/; "+(d?"domain="+d+";":"")};a.Utils.readCookie=function(b){var a=document.cookie.split("; ");b+="=";for(var d=!1,e=0;e<a.length;e++)if(-1!=a[e].indexOf(b)){d=a[e].substr(b.length);break}return d};a.APIFunctions={};a.APIFunctions.updateUserId=function(b){a.Utils.createCookie(a.Objects.widget.visitorCookieName,b.user.id)};a.APIFunctions.inviteOnResponse=function(b){var a=b.invitation.operator,d=b.invitation.avatar,e=b.invitation.url;b='<div id="mibewinvitationpopup" style="display: none;"><div id="mibewinvitationclose"><a href="javascript:void(0);" onclick="Mibew.Invitation.reject();">&times;</a></div>';
-a&&(b+='<h1 onclick="Mibew.Invitation.accept();">'+a+"</h1>");d&&(b+='<img id="mibewinvitationavatar" src="'+d+'" title="'+a+'" alt="'+a+'" onclick="Mibew.Invitation.accept();" />');e&&(b+='<iframe id="mibewinvitationframe" src="'+e+'" onload="Mibew.Invitation.show();"></iframe>');b+='<div style="clear: both;"></div></div>';if(a=document.getElementById("mibewinvitation"))a.innerHTML=b};a.APIFunctions.inviteOnClose=function(){a.Invitation.hide()};a.Invitation={};a.Invitation.hide=function(){var a=
-document.getElementById("mibewinvitationpopup");a&&a.parentNode.removeChild(a)};a.Invitation.show=function(){var a=document.getElementById("mibewinvitationpopup");a&&(a.style.display="block")};a.Invitation.accept=function(){document.getElementById("mibewAgentButton")&&(document.getElementById("mibewAgentButton").onclick(),a.Invitation.hide())};a.Invitation.reject=function(){a.Objects.widget.sendToServer({invitation_rejected:1});a.Invitation.hide()}})(Mibew);
+(function(b){b.Objects={};b.Widget=function(a){this.requestedScripts={};this.handlers=[];this.handlersDependences={};this.requestURL=a.requestURL;this.requestTimeout=a.requestTimeout;this.visitorCookieName=a.visitorCookieName;this.inviteStyle=a.inviteStyle;this.locale=a.locale;this.dataToSend={};var c=document.createElement("link");c.setAttribute("rel","stylesheet");c.setAttribute("type","text/css");c.setAttribute("href",a.inviteStyle);document.getElementsByTagName("head")[0].appendChild(c)};b.Widget.prototype.makeRequest=
+function(){var a=b.Utils.readCookie(this.visitorCookieName);this.dataToSend.entry=escape(document.referrer);this.dataToSend.locale=this.locale;this.dataToSend.rnd=Math.random();!1!==a?this.dataToSend.user_id=a:this.dataToSend.user_id&&delete this.dataToSend.user_id;this.doLoadScript(this.requestURL+"?"+this.getQuery(),"responseScript");this.dataToSend={}};b.Widget.prototype.getQuery=function(){var a=[],c;for(c in this.dataToSend)this.dataToSend.hasOwnProperty(c)&&a.push(c+"="+this.dataToSend[c]);
+return a.join("&")};b.Widget.prototype.sendToServer=function(a){for(var c in a)if(a.hasOwnProperty(c)){var b=a[c];"string"!==typeof b&&"number"!==typeof b||("string"===typeof b&&(b=encodeURIComponent(b)),this.dataToSend[c]=b)}};b.Widget.prototype.onResponse=function(a){var c=a.load,d=a.handlers,e=a.data;a=a.dependences;var j=this,f;for(f in c)c.hasOwnProperty(f)&&!(f in this.requestedScripts)&&(this.requestedScripts[f]={},this.requestedScripts[f].url=c[f],this.requestedScripts[f].status="loading",
+this.loadScript(f));for(var h in a)a.hasOwnProperty(h)&&(h in this.handlersDependences||(this.handlersDependences[h]=a[h]));for(c=0;c<d.length;c++){var g=d[c];if(this.canRunHandler(g))b.APIFunctions[g](e);else g in this.handlers||(this.handlers[g]=function(){b.APIFunctions[g](e)})}this.cleanUpAfterRequest();window.setTimeout(function(){j.makeRequest()},this.requestTimeout)};b.Widget.prototype.cleanUpAfterRequest=function(){document.getElementsByTagName("head")[0].removeChild(document.getElementById("responseScript"))};
+b.Widget.prototype.loadScript=function(a){var c=this,b=this.doLoadScript(this.requestedScripts[a].url,a);b.onload=function(){c.scriptReady(a)};b.onreadystatechange=function(){("complete"==this.readyState||"loaded"==this.readyState)&&c.scriptReady(a)}};b.Widget.prototype.doLoadScript=function(a,b){var d=document.createElement("script");d.setAttribute("type","text/javascript");d.setAttribute("src",a);d.setAttribute("id",b);document.getElementsByTagName("head")[0].appendChild(d);return d};b.Widget.prototype.scriptReady=
+function(a){this.requestedScripts[a].status="ready";for(var b in this.handlers)this.handlers.hasOwnProperty(b)&&this.canRunHandler(b)&&(this.handlers[b](),delete this.handlers[b])};b.Widget.prototype.canRunHandler=function(a){a=this.handlersDependences[a];for(var b=0;b<a.length;b++)if("ready"!=this.requestedScripts[a[b]].status)return!1;return!0};b.Widget.init=function(a){b.Objects.widget=new b.Widget(a);b.Objects.widget.makeRequest()};b.Utils={};b.Utils.createCookie=function(a,b){var d=/([^\.]+\.[^\.]+)$/.exec(document.location.hostname)[1];
+document.cookie=""+a+"="+b+"; path=/; "+(d?"domain="+d+";":"")};b.Utils.readCookie=function(a){var b=document.cookie.split("; ");a+="=";for(var d=!1,e=0;e<b.length;e++)if(-1!=b[e].indexOf(a)){d=b[e].substr(a.length);break}return d};b.Invitation={};b.Invitation.create=function(a){var b=a.operatorName,d=a.avatarUrl,e=a.threadUrl;a='<div id="mibewinvitationpopup" style="display: none;"><div id="mibewinvitationclose"><a href="javascript:void(0);" onclick="Mibew.Invitation.reject();">&times;</a></div>';
+b&&(a+='<h1 onclick="Mibew.Invitation.accept();">'+b+"</h1>");d&&(a+='<img id="mibewinvitationavatar" src="'+d+'" title="'+b+'" alt="'+b+'" onclick="Mibew.Invitation.accept();" />');e&&(a+='<iframe id="mibewinvitationframe" src="'+e+'" onload="Mibew.Invitation.show();"></iframe>');a+='<div style="clear: both;"></div></div>';if(b=document.getElementById("mibewinvitation"))b.innerHTML=a};b.Invitation.show=function(){var a=document.getElementById("mibewinvitationpopup");a&&(a.style.display="block")};
+b.Invitation.hide=function(){var a=document.getElementById("mibewinvitationpopup");a&&a.parentNode.removeChild(a)};b.Invitation.accept=function(){document.getElementById("mibewAgentButton")&&(document.getElementById("mibewAgentButton").onclick(),b.Invitation.hide())};b.Invitation.reject=function(){b.Objects.widget.sendToServer({invitation_rejected:1});b.Invitation.hide()};b.APIFunctions={};b.APIFunctions.updateUserId=function(a){b.Utils.createCookie(b.Objects.widget.visitorCookieName,a.user.id)};
+b.APIFunctions.invitationCreate=function(a){b.Invitation.create(a.invitation)};b.APIFunctions.invitationClose=function(){b.Invitation.hide()}})(Mibew);
diff --git a/src/messenger/webim/js/source/widget.js b/src/messenger/webim/js/source/widget.js
index 52f04139..268bfd9b 100644
--- a/src/messenger/webim/js/source/widget.js
+++ b/src/messenger/webim/js/source/widget.js
@@ -320,6 +320,7 @@ var Mibew = {};
         Mibew.Objects.widget.makeRequest();
     }
 
+
     /**
      * @namespace Holds utility functions
      */
@@ -359,6 +360,99 @@ var Mibew = {};
         return value;
     }
 
+
+    /**
+     * @namespace Holds invitation stuff
+     */
+    Mibew.Invitation = {};
+
+    /**
+     * Create invitation popup
+     * @param {Object} options Popup options. It can contain following items:
+     *  - 'operatorName': String, name of the operator who invite visitor to
+     *    chat;
+     *  - 'avatarUrl' String, URL of operator's avatar;
+     *  - 'threadUrl': String, URL of the invitation thread which must be
+     *    dispaly in invitation iframe.
+     */
+    Mibew.Invitation.create = function (options) {
+        var operatorName = options.operatorName;
+        var avatarUrl = options.avatarUrl;
+        var threadUrl = options.threadUrl;
+
+        var popuptext = '<div id="mibewinvitationpopup" style="display: none;">';
+        popuptext += '<div id="mibewinvitationclose">'
+            + '<a href="javascript:void(0);" onclick="Mibew.Invitation.reject();">'
+            + '&times;</a></div>';
+
+        // Add operator name
+        if (operatorName) {
+            popuptext += '<h1 onclick="Mibew.Invitation.accept();">'
+                + operatorName
+                + '</h1>';
+        }
+
+        // Add operator avatar
+        if (avatarUrl) {
+            popuptext += '<img id="mibewinvitationavatar" src="' + avatarUrl
+                + '" title="' + operatorName
+                + '" alt="' + operatorName
+                + '" onclick="Mibew.Invitation.accept();" />';
+        }
+
+        // Broadcast message from the thread related with invitation into iframe
+        if (threadUrl) {
+            popuptext += '<iframe id="mibewinvitationframe" src="' + threadUrl
+                + '" onload="Mibew.Invitation.show();"></iframe>';
+        }
+
+        popuptext += '<div style="clear: both;"></div></div>';
+
+        var invitationdiv = document.getElementById("mibewinvitation");
+        if (invitationdiv) {
+                invitationdiv.innerHTML = popuptext;
+        }
+    }
+
+    /**
+     * Display invitation popup
+     */
+    Mibew.Invitation.show = function() {
+        var invitationPopup = document.getElementById('mibewinvitationpopup');
+        if (invitationPopup) {
+            invitationPopup.style.display = 'block';
+        }
+    }
+
+    /**
+     * Hide invitation popup and remove it from DOM
+     */
+    Mibew.Invitation.hide = function() {
+        var invitationPopup = document.getElementById('mibewinvitationpopup');
+        if (invitationPopup) {
+            invitationPopup.parentNode.removeChild(invitationPopup);
+        }
+    }
+
+    /**
+     * Accept invitation and open chat window
+     */
+    Mibew.Invitation.accept = function() {
+        if (document.getElementById('mibewAgentButton')) {
+            document.getElementById('mibewAgentButton').onclick();
+            Mibew.Invitation.hide();
+        }
+    }
+
+    /**
+     * Visitor rejects invitation
+     */
+    Mibew.Invitation.reject = function() {
+        Mibew.Objects.widget.sendToServer({'invitation_rejected': 1});
+        Mibew.Invitation.hide();
+    }
+
+
     /**
      * @namespace Holds functions that can be called by the Core
      */
@@ -377,91 +471,16 @@ var Mibew = {};
 
     /**
      * Show invitation popup
-     * @param {Object} response Data passed from server
+     * @param {Object} data Response data passed from server
      */
-    Mibew.APIFunctions.inviteOnResponse = function(response) {
-        var operator = response.invitation.operator;
-        var avatar = response.invitation.avatar;
-        var url = response.invitation.url;
-
-        var popuptext = '<div id="mibewinvitationpopup" style="display: none;">';
-        popuptext += '<div id="mibewinvitationclose">'
-            + '<a href="javascript:void(0);" onclick="Mibew.Invitation.reject();">'
-            + '&times;</a></div>';
-
-        // Add operator name
-        if (operator) {
-            popuptext += '<h1 onclick="Mibew.Invitation.accept();">'
-                + operator
-                + '</h1>';
-        }
-
-        // Add operator avatar
-        if (avatar) {
-            popuptext += '<img id="mibewinvitationavatar" src="' + avatar
-                + '" title="' + operator
-                + '" alt="' + operator
-                + '" onclick="Mibew.Invitation.accept();" />';
-        }
-
-        // Translate message from the thread related with invitation into iframe
-        if (url) {
-            popuptext += '<iframe id="mibewinvitationframe" src="' + url
-                + '" onload="Mibew.Invitation.show();"></iframe>';
-        }
-
-        popuptext += '<div style="clear: both;"></div></div>';
-
-        var invitationdiv = document.getElementById("mibewinvitation");
-        if (invitationdiv) {
-                invitationdiv.innerHTML = popuptext;
-        }
+    Mibew.APIFunctions.invitationCreate = function(data) {
+        Mibew.Invitation.create(data.invitation);
     }
 
     /**
      * Close invitation popup
      */
-    Mibew.APIFunctions.inviteOnClose = function() {
-        Mibew.Invitation.hide();
-    }
-
-    /**
-     * @namespace Holds invitation stuff
-     */
-    Mibew.Invitation = {};
-
-    /**
-     * Hide invitation popup and remove it from DOM
-     */
-    Mibew.Invitation.hide = function() {
-        var invitationPopup = document.getElementById('mibewinvitationpopup');
-        if (invitationPopup) {
-            invitationPopup.parentNode.removeChild(invitationPopup);
-        }
-    }
-
-    /**
-     * Display invitation popup
-     */
-    Mibew.Invitation.show = function() {
-        var invitationPopup = document.getElementById('mibewinvitationpopup');
-        if (invitationPopup) {
-            invitationPopup.style.display = 'block';
-        }
-    }
-
-    /**
-     * Accept invitation and open chat window
-     */
-    Mibew.Invitation.accept = function() {
-        if (document.getElementById('mibewAgentButton')) {
-            document.getElementById('mibewAgentButton').onclick();
-            Mibew.Invitation.hide();
-        }
-    }
-
-    Mibew.Invitation.reject = function() {
-        Mibew.Objects.widget.sendToServer({'invitation_rejected': 1});
+    Mibew.APIFunctions.invitationClose = function() {
         Mibew.Invitation.hide();
     }
 
diff --git a/src/messenger/webim/widget.php b/src/messenger/webim/widget.php
index 47430643..83adbf82 100644
--- a/src/messenger/webim/widget.php
+++ b/src/messenger/webim/widget.php
@@ -66,8 +66,8 @@ if (Settings::get('enabletracking') == '1') {
 	if (! $invitation_state['invited']
 		&& ! empty($_SESSION['invitation_threadid'])
 	) {
-		$response['handlers'][] = 'inviteOnClose';
-		$response['dependences']['inviteOnClose'] = array();
+		$response['handlers'][] = 'invitationClose';
+		$response['dependences']['invitationClose'] = array();
 		unset($_SESSION['invitation_threadid']);
 	}
 
@@ -84,17 +84,17 @@ if (Settings::get('enabletracking') == '1') {
 		// Get operator info
 		$operator = operator_by_id($thread->agentId);
 		$locale = isset($_GET['locale']) ? $_GET['locale'] : '';
-		$operatorName = ($locale == $home_locale)
+		$operator_name = ($locale == $home_locale)
 			? $operator['vclocalename']
 			: $operator['vccommonname'];
 
 		// Show invitation dialog at widget side
-		$response['handlers'][] = 'inviteOnResponse';
-		$response['dependences']['inviteOnResponse'] = array();
+		$response['handlers'][] = 'invitationCreate';
+		$response['dependences']['invitationCreate'] = array();
 		$response['data']['invitation'] = array(
-			'operator' => htmlspecialchars($operatorName),
-			'avatar' => htmlspecialchars($operator['vcavatar']),
-			'url' => get_app_location(true, is_secure_request())
+			'operatorName' => htmlspecialchars($operator_name),
+			'avatarUrl' => htmlspecialchars($operator['vcavatar']),
+			'threadUrl' => get_app_location(true, is_secure_request())
 				. '/client.php?act=invitation'
 		);