Index: openacs-4/packages/chat/chat.info
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/chat/chat.info,v
diff -u -N -r1.25 -r1.26
--- openacs-4/packages/chat/chat.info	6 Dec 2018 17:10:18 -0000	1.25
+++ openacs-4/packages/chat/chat.info	18 Jan 2019 16:39:36 -0000	1.26
@@ -9,16 +9,16 @@
     <implements-subsite-p>f</implements-subsite-p>
     <inherit-templates-p>t</inherit-templates-p>
 
-    <version name="5.0.1d4" url="http://openacs.org/repository/download/apm/chat-5.0.1d4.apm">
+    <version name="5.0.1d5" url="http://openacs.org/repository/download/apm/chat-5.0.1d5.apm">
         <owner url="http://www.openacs.org">Peter Alberer</owner>
         <summary>Server based chat with an html and ajax client.</summary>
-        <release-date>2018-12-06</release-date>
+        <release-date>2019-01-18</release-date>
         <vendor url="http://openacs.org">OpenACS</vendor>
         <description format="text/html">Adapted by Peter Alberer 2006/03/25 to allow java and ajax to coexist.
 Adapted by Tekne 2006/03/01 to replace JAVA server with AJAX; make use of generalized chat class from xotcl-core.</description>
         <maturity>0</maturity>
 
-        <provides url="chat" version="5.0.1d4"/>
+        <provides url="chat" version="5.0.1d5"/>
         <requires url="acs-kernel" version="5.9.1"/>
         <requires url="xowiki" version="5.10.0d17"/>
 
@@ -28,6 +28,7 @@
             <parameter scope="instance" datatype="string"  min_n_values="1"  max_n_values="1"  name="UserColors"  default="#006400 #0000ff #b8860b #bdb76b #8b0000" description="A list of colors to assign to user names in the chat"/>
             <parameter scope="global" datatype="string"  min_n_values="1"  max_n_values="1"  name="LinkRegex"  default="(https?:\\/\\/[^\\s]+)" description="Regular expression to detect URLs in chat messages, creating html links accordingly. By default, it matches any string starting with http:// or https://. Please notice the backslash double escaping."/>
             <parameter scope="instance" datatype="string"  min_n_values="1"  max_n_values="1"  name="ChatSkin"  default="bubbles" description="Chat skin. Current options are 'classic' and 'bubbles'."/>
+            <parameter scope="instance" datatype="number"  min_n_values="1"  max_n_values="1"  name="ShowAvatarP"  default="1" description="Boolean parameter to enable/disable avatar images in the chat. Default is 1 (true)."/>
         </parameters>
 
     </version>
Index: openacs-4/packages/chat/tcl/chat-ajax-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/chat/tcl/chat-ajax-procs.tcl,v
diff -u -N -r1.31 -r1.32
--- openacs-4/packages/chat/tcl/chat-ajax-procs.tcl	6 Dec 2018 19:05:22 -0000	1.31
+++ openacs-4/packages/chat/tcl/chat-ajax-procs.tcl	18 Jan 2019 16:39:36 -0000	1.32
@@ -43,8 +43,10 @@
             chat_room_get -room_id $chat_id -array c
             set package_id $c(context_id)
             set chat_skin [parameter::get -package_id $package_id -parameter ChatSkin]
+            set chat_avatar_p [parameter::get -package_id $package_id -parameter ShowAvatarP]
             next -chat_id $chat_id \
                 -skin $chat_skin \
+                -show_avatar $chat_avatar_p \
                 -package_id $package_id \
                 -mode $mode \
                 -path $path \
Index: openacs-4/packages/xowiki/tcl/chat-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/chat-procs.tcl,v
diff -u -N -r1.53 -r1.54
--- openacs-4/packages/xowiki/tcl/chat-procs.tcl	17 Dec 2018 18:00:39 -0000	1.53
+++ openacs-4/packages/xowiki/tcl/chat-procs.tcl	18 Jan 2019 16:39:36 -0000	1.54
@@ -417,6 +417,7 @@
   ::xo::ChatClass instproc login {
     -chat_id
     {-skin "classic"}
+    {-show_avatar_p "true"}
     {-package_id ""}
     {-mode ""}
     {-path ""}
@@ -571,6 +572,12 @@
       }]
     }
 
+    if {$show_avatar_p} {
+      append html {
+        <span id="xowiki-chat-show-avatar" hidden></span>
+      }
+    }
+
     append html [subst {
       <script nonce='$::__csp_nonce'>
         addSendPic();
Index: openacs-4/packages/xowiki/www/resources/chat-skins/chat-bubbles-common.js
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/www/resources/chat-skins/chat-bubbles-common.js,v
diff -u -N -r1.2 -r1.3
--- openacs-4/packages/xowiki/www/resources/chat-skins/chat-bubbles-common.js	6 Dec 2018 19:05:22 -0000	1.2
+++ openacs-4/packages/xowiki/www/resources/chat-skins/chat-bubbles-common.js	18 Jan 2019 16:39:36 -0000	1.3
@@ -122,11 +122,14 @@
             // User picture
             wrapper = document.createElement('div');
             wrapper.className = 'xowiki-chat-user-pic-wrap';
-            img = document.createElement('img');
-            img.src = '/shared/portrait-bits.tcl?user_id=' + user_id
-            img.className = 'xowiki-chat-user-pic';
-            img.style = 'border-color:' + color;
-            wrapper.appendChild(img);
+            var show_avatar = document.getElementById('xowiki-chat-show-avatar');
+            if (show_avatar != null) {
+                img = document.createElement('img');
+                img.src = '/shared/portrait-bits.tcl?user_id=' + user_id
+                img.className = 'xowiki-chat-user-pic';
+                img.style = 'border-color:' + color;
+                wrapper.appendChild(img);
+            }
             messages.appendChild(wrapper);
 
             // User link
@@ -229,14 +232,17 @@
         a.appendChild(user_block);
 
         // User picture
-        wrapper = document.createElement('div');
-        wrapper.className = 'xowiki-chat-user-pic-wrap';
-        img = document.createElement('img');
-        img.setAttribute("src", "/shared/portrait-bits.tcl?user_id=" + user_id);
-        img.setAttribute("class", "xowiki-chat-user-pic");
-        img.setAttribute("style", "border-color:" + color);
-        wrapper.appendChild(img);
-        user_block.appendChild(wrapper);
+        var show_avatar = document.getElementById('xowiki-chat-show-avatar');
+        if (show_avatar != null) {
+            wrapper = document.createElement('div');
+            wrapper.className = 'xowiki-chat-user-pic-wrap';
+            img = document.createElement('img');
+            img.setAttribute("src", "/shared/portrait-bits.tcl?user_id=" + user_id);
+            img.setAttribute("class", "xowiki-chat-user-pic");
+            img.setAttribute("style", "border-color:" + color);
+            wrapper.appendChild(img);
+            user_block.appendChild(wrapper);
+        }
 
         // User name
         span = document.createElement('span');
Index: openacs-4/packages/xowiki/www/resources/chat-skins/chat-classic-common.js
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/www/resources/chat-skins/chat-classic-common.js,v
diff -u -N -r1.2 -r1.3
--- openacs-4/packages/xowiki/www/resources/chat-skins/chat-classic-common.js	6 Dec 2018 19:05:22 -0000	1.2
+++ openacs-4/packages/xowiki/www/resources/chat-skins/chat-classic-common.js	18 Jan 2019 16:39:36 -0000	1.3
@@ -170,14 +170,17 @@
         a.appendChild(user_block);
 
         // User picture
-        wrapper = document.createElement('div');
-        wrapper.className = 'xowiki-chat-user-pic-wrap';
-        img = document.createElement('img');
-        img.setAttribute("src", "/shared/portrait-bits.tcl?user_id=" + user_id);
-        img.setAttribute("class", "xowiki-chat-user-pic");
-        img.setAttribute("style", "border-color:" + color);
-        wrapper.appendChild(img);
-        user_block.appendChild(wrapper);
+        var show_avatar = document.getElementById('xowiki-chat-show-avatar');
+        if (show_avatar != null) {
+            wrapper = document.createElement('div');
+            wrapper.className = 'xowiki-chat-user-pic-wrap';
+            img = document.createElement('img');
+            img.setAttribute("src", "/shared/portrait-bits.tcl?user_id=" + user_id);
+            img.setAttribute("class", "xowiki-chat-user-pic");
+            img.setAttribute("style", "border-color:" + color);
+            wrapper.appendChild(img);
+            user_block.appendChild(wrapper);
+        }
 
         // User name
         span = document.createElement('span');