diff --git a/extensions/wallet/cookieviewer/resources/content/CookieViewer.xul b/extensions/wallet/cookieviewer/resources/content/CookieViewer.xul
index c33c363f84cc..62584d2c32a2 100644
--- a/extensions/wallet/cookieviewer/resources/content/CookieViewer.xul
+++ b/extensions/wallet/cookieviewer/resources/content/CookieViewer.xul
@@ -52,7 +52,7 @@
         <box><html:div>&div.cookiesonsystem.label;</html:div></box>
         <spring style="height: 10px;"/>
           <tree id="cookietree" class="inset" style="height: 150px; width: 380px;" align="vertical" 
-            onselect="ViewCookieSelected(event);"
+            multiple="true" onselect="ViewCookieSelected(event);"
             onclick="ViewCookieSelected(event)"
             onkeypress="HandleKeyPress(event)">
             <treecol width="30%"/>
@@ -108,6 +108,10 @@
                         onclick="DeleteAllCookies();"/>
           <!--  todo: <titledbutton id="restoreCookies" class="dialog push" disabled="true" value="&button.restorecookie.label;" onclick="RestoreCookies();"/> -->
         </box>
+        <html:label id="checkboxLabel">
+          <html:input type="checkbox" id="checkbox" />
+          &checkbox.label;
+        </html:label>
       </box>
       
       <box class="tabpanel" id="servers" flex="100%" align="vertical">
@@ -115,7 +119,7 @@
         <spring flex="5%"/>
           <tree id="permissionstree" class="inset" style="height: 280px; width: 380px;" align="vertical"
                 onkeypress="if(event.which == 46) gone_p += DeleteItemSelected('permissionstree', 'permtree_', 'permissionslist');"
-                onclick="ViewPermissionSelected();">
+                multiple="true" onclick="ViewPermissionSelected();">
             <treehead>
               <treerow>
                 <treecell value="&treehead.sitename.label;"/>
@@ -141,7 +145,7 @@
         <spring flex="5%"/>
           <tree id="imagestree" class="inset" style="height: 280px; width: 380px;" align="vertical"
                 onkeypress="if(event.which == 46) gone_i += DeleteItemSelected('imagestree', 'imgtree_', 'imageslist');"
-                onclick="ViewImageSelected();">
+                multiple="true" onclick="ViewImageSelected();">
             <treehead>
               <treerow>
                 <treecell value="&treehead.sitename.label;"/>
diff --git a/extensions/wallet/signonviewer/resources/content/SignonViewer.xul b/extensions/wallet/signonviewer/resources/content/SignonViewer.xul
index e86d46c4401b..81d50d4be6af 100644
--- a/extensions/wallet/signonviewer/resources/content/SignonViewer.xul
+++ b/extensions/wallet/signonviewer/resources/content/SignonViewer.xul
@@ -56,7 +56,7 @@
         <spring style="height: 10px;"/>
           <tree id="signonstree" class="inset" style="height: 280px; width: 440px;" align="vertical"
                 onclick="HandleEvent(event);"
-                onkeypress="HandleEvent(event,0)">
+                multiple="true" onkeypress="HandleEvent(event,0)">
             <treecol width="45%"/>
             <treecol width="55%"/>
             <treehead>
@@ -83,7 +83,7 @@
         <spring style="height: 10px;"/>
           <tree id="ignoretree" class="inset" style="height: 280px; width: 440px;" align="vertical"
                 onclick="HandleEvent(event);"
-                onkeypress="HandleEvent(event,1)">
+                multiple="true" onkeypress="HandleEvent(event,1)">
             <treecol width="100%"/>
             <treehead>
               <treerow>
@@ -108,7 +108,7 @@
         <spring style="height: 10px;"/>
           <tree id="nopreviewtree" class="inset" style="height: 280px; width: 440px;" align="vertical"
                 onclick="HandleEvent(event);"
-                onkeypress="HandleEvent(event,2)">
+                multiple="true" onkeypress="HandleEvent(event,2)">
             <treecol width="100%"/>
             <treehead>
               <treerow>
@@ -133,7 +133,7 @@
         <spring style="height: 10px;"/>
           <tree id="nocapturetree" class="inset" style="height: 280px; width: 440px;" align="vertical"
                 onclick="HandleEvent(event);"
-                onkeypress="HandleEvent(event,3)">
+                multiple="true" onkeypress="HandleEvent(event,3)">
             <treecol width="100%"/>
             <treehead>
               <treerow>
diff --git a/xpfe/components/permissions/content/cookieViewer.xul b/xpfe/components/permissions/content/cookieViewer.xul
index c33c363f84cc..62584d2c32a2 100644
--- a/xpfe/components/permissions/content/cookieViewer.xul
+++ b/xpfe/components/permissions/content/cookieViewer.xul
@@ -52,7 +52,7 @@
         <box><html:div>&div.cookiesonsystem.label;</html:div></box>
         <spring style="height: 10px;"/>
           <tree id="cookietree" class="inset" style="height: 150px; width: 380px;" align="vertical" 
-            onselect="ViewCookieSelected(event);"
+            multiple="true" onselect="ViewCookieSelected(event);"
             onclick="ViewCookieSelected(event)"
             onkeypress="HandleKeyPress(event)">
             <treecol width="30%"/>
@@ -108,6 +108,10 @@
                         onclick="DeleteAllCookies();"/>
           <!--  todo: <titledbutton id="restoreCookies" class="dialog push" disabled="true" value="&button.restorecookie.label;" onclick="RestoreCookies();"/> -->
         </box>
+        <html:label id="checkboxLabel">
+          <html:input type="checkbox" id="checkbox" />
+          &checkbox.label;
+        </html:label>
       </box>
       
       <box class="tabpanel" id="servers" flex="100%" align="vertical">
@@ -115,7 +119,7 @@
         <spring flex="5%"/>
           <tree id="permissionstree" class="inset" style="height: 280px; width: 380px;" align="vertical"
                 onkeypress="if(event.which == 46) gone_p += DeleteItemSelected('permissionstree', 'permtree_', 'permissionslist');"
-                onclick="ViewPermissionSelected();">
+                multiple="true" onclick="ViewPermissionSelected();">
             <treehead>
               <treerow>
                 <treecell value="&treehead.sitename.label;"/>
@@ -141,7 +145,7 @@
         <spring flex="5%"/>
           <tree id="imagestree" class="inset" style="height: 280px; width: 380px;" align="vertical"
                 onkeypress="if(event.which == 46) gone_i += DeleteItemSelected('imagestree', 'imgtree_', 'imageslist');"
-                onclick="ViewImageSelected();">
+                multiple="true" onclick="ViewImageSelected();">
             <treehead>
               <treerow>
                 <treecell value="&treehead.sitename.label;"/>