diff --git a/fields/ref.py b/fields/ref.py
index 28b69f0..63054f0 100644
--- a/fields/ref.py
+++ b/fields/ref.py
@@ -176,7 +176,7 @@ class Ref(Field):
      <a target="appyIFrame"
         var="tiedClassName=tiedClassName|ztool.getPortalType(field.klass);
              className=ztool.getPortalType(obj.klass)"
-        href=":'%s/query?className=%s&amp;search=%s:%s:%s&amp;popup=1' % \
+        href=":'%s/query?className=%s&amp;search=%s*%s*%s&amp;popup=1' % \
                (ztool.absolute_url(), tiedClassName, obj.uid, field.name, \
                 popupMode)">
       <input type="button"
@@ -287,13 +287,13 @@ class Ref(Field):
        <!-- Loop on every (tied or selectable) object -->
        <x for="tied in objects"
           var2="@currentNumber=currentNumber + 1;
-                rowCss=loop.tied.odd and 'even' or 'odd'">:obj.pxViewAsTied</x>
+                rowCss=loop.tied.odd and 'even' or 'odd'">:tied.pxViewAsTied</x>
       </table>
       <!-- Global actions -->
       <x if="mayEdit and checkboxes">:field.pxGlobalActions</x>
       <!-- (Bottom) navigation -->
       <x>:tool.pxNavigate</x>
-      <!-- Init checkboxes if present. -->
+      <!-- Init checkboxes if present -->
       <script if="checkboxes">:'initCbs(%s)' % q(ajaxHookId)</script>
      </div>''')
 
@@ -437,8 +437,8 @@ class Ref(Field):
              collapse=field.getCollapseInfo(obj, False);
              showSubTitles=req.get('showSubTitles', 'true') == 'true'">
       <!-- JS tables storing checkbox statuses if checkboxes are enabled -->
-      <script if="checkboxesEnabled and renderAll and (render == 'list')"
-              type="text/javascript">:field.getCbJsInit(zobj)</script>
+      <script if="checkboxesEnabled and renderAll \
+                  and (render == 'list')">:field.getCbJsInit(zobj)</script>
       <x if="linkList and renderAll and mayEdit"
          var2="ajaxHookId='%s_%s_poss' % \
                 (zobj.id, field.name)">:field.pxViewPickList</x>
@@ -1265,7 +1265,7 @@ class Ref(Field):
         code = "\nnode['_appy_%%s_cbs']={};\nnode['_appy_%%s_sem']='%s';" % \
                default
         poss = (self.link == 'list') and (code % ('poss', 'poss')) or ''
-        return "var node=document.getElementById('%s_%s');%s%s" % \
+        return "var node=findNode(this, '%s_%s');%s%s" % \
                (obj.id, self.name, code % ('objs', 'objs'), poss)
 
     def getAjaxData(self, hook, zobj, **params):
diff --git a/fields/search.py b/fields/search.py
index 7b0cca2..fe7c7fc 100644
--- a/fields/search.py
+++ b/fields/search.py
@@ -202,8 +202,8 @@ class UiSearch:
         <td colspan=":len(columns)+1">:_('query_no_result')</td>
        </tr>
        <x for="zobj in zobjects"
-          var2="@currentNumber=currentNumber + 1;
-               rowCss=loop.zobj.odd and 'even' or 'odd'">:obj.pxViewAsResult</x>
+          var2="rowCss=loop.zobj.odd and 'even' or 'odd';
+               @currentNumber=currentNumber + 1">:zobj.appy().pxViewAsResult</x>
       </table>
       <!-- The button for selecting objects and closing the popup -->
       <div if="inPopup and cbShown" align=":dleft">
@@ -241,7 +241,7 @@ class UiSearch:
      <div var="ajaxHookId='queryResult';
                className=req['className'];
                searchName=req.get('search', '');
-               uiSearch=uiSearch|ztool.getSearch(className,searchName,ui=True);
+               uiSearch=field|ztool.getSearch(className, searchName, ui=True);
                rootHookId=uiSearch.getRootHookId();
                refInfo=ztool.getRefInfo();
                refObject=refInfo[0];
@@ -389,7 +389,7 @@ class UiSearch:
         '''Returns the code that creates JS data structures for storing the
            status of checkboxes for every result of this search.'''
         default = self.search.checkboxesDefault and 'unchecked' or 'checked'
-        return '''var node=document.getElementById('%s');
+        return '''var node=findNode(this, '%s');
                   node['_appy_objs_cbs'] = {};
                   node['_appy_objs_sem'] = '%s';''' % (hookId, default)
 
diff --git a/gen/mixins/ToolMixin.py b/gen/mixins/ToolMixin.py
index 27fa842..37f8876 100644
--- a/gen/mixins/ToolMixin.py
+++ b/gen/mixins/ToolMixin.py
@@ -223,11 +223,11 @@ class ToolMixin(BaseMixin):
         return res
 
     def getRootClasses(self):
-        '''Returns the list of root classes for this application.'''
+        '''Returns the list of root classes for this application'''
         cfg = self.getProductConfig().appConfig
         rootClasses = cfg.rootClasses
         if not rootClasses:
-            # We consider every class as being a root class.
+            # We consider every class as being a root class
             rootClasses = self.getProductConfig().appClassNames
         return [self.getAppyClass(k) for k in rootClasses]
 
@@ -749,10 +749,10 @@ class ToolMixin(BaseMixin):
             # It is a custom search whose parameters are in the session
             fields = self.REQUEST.SESSION['searchCriteria']
             res = Search('customSearch', **fields)
-        elif ':' in name:
+        elif '*' in name:
             # The search is defined in a Ref field with link=popup. Get the
             # search, the initiator object and the Ref field.
-            uid, ref, mode = name.split(':')
+            uid, ref, mode = name.split('*')
             initiator = self.getObject(uid, appy=True)
             initiatorField = initiator.getField(ref)
             res = getattr(initiator.klass, ref).select
diff --git a/gen/mixins/__init__.py b/gen/mixins/__init__.py
index 2036f69..9509d6a 100644
--- a/gen/mixins/__init__.py
+++ b/gen/mixins/__init__.py
@@ -405,8 +405,8 @@ class BaseMixin:
                     pageInfo = phaseObj.getPageInfo(rq['page'], 'view')
                     if not pageInfo: urlBack = tool.getHomePage()
                     else: urlBack = self.getUrl(page=pageInfo.page.name)
-            self.say(self.translate('object_canceled'))
             self.removeLock(rq['page'])
+            self.say(self.translate('object_canceled'))
             if inPopup: return back
             return self.goto(urlBack)
 
diff --git a/gen/ui/appy.js b/gen/ui/appy.js
index b2de253..6316e59 100644
--- a/gen/ui/appy.js
+++ b/gen/ui/appy.js
@@ -403,7 +403,7 @@ function toggleCheckbox(visibleCheckbox, hiddenBoolean) {
   else hidden.value = 'False';
 }
 
-// JS implementation of Python ''.rsplit.
+// JS implementation of Python ''.rsplit
 function _rsplit(s, delimiter, limit) {
   var elems = s.split(delimiter);
   var exc = elems.length - limit;
@@ -419,11 +419,11 @@ function _rsplit(s, delimiter, limit) {
   return res;
 }
 
-// (Un)checks a checkbox corresponding to a linked object.
+// (Un)checks a checkbox corresponding to a linked object
 function toggleCb(checkbox) {
   var name = checkbox.getAttribute('name');
   var elems = _rsplit(name, '_', 3);
-  // Get the DOM node corresponding to the Ref field.
+  // Get the DOM node corresponding to the Ref field
   var node = document.getElementById(elems[0] + '_' + elems[1]);
   // Get the array that stores checkbox statuses.
   var statuses = node['_appy_' + elems[2] + '_cbs'];
@@ -440,17 +440,26 @@ function toggleCb(checkbox) {
   }
 }
 
-// Initialise checkboxes of a Ref field or Search.
+function findNode(node, id) {
+  /* When coming back from the iframe popup, we are still in the context of the
+     iframe, which can cause problems for finding nodes. We have found that this
+     case can be detected by checking node.window. */
+  if (node.window) var container = node.window.document;
+  else var container = window.parent.document;
+  return container.getElementById(id);
+}
+
+// Initialise checkboxes of a Ref field or Search
 function initCbs(id) {
   var elems = _rsplit(id, '_', 3);
-  // Get the DOM node corresponding to the Ref field.
+  // Get the DOM node corresponding to the Ref field
   var node = document.getElementById(elems[0] + '_' + elems[1]);
-  // Get the array that stores checkbox statuses.
+  // Get the array that stores checkbox statuses
   var statuses = node['_appy_' + elems[2] + '_cbs'];
   // Get the array semantics
   var semantics = node['_appy_' + elems[2] + '_sem'];
   var value = (semantics == 'unchecked')? false: true;
-  // Update visible checkboxes.
+  // Update visible checkboxes
   var checkboxes = getElementsHavingName('input', id);
   for (var i=0; i < checkboxes.length; i++) {
     if (checkboxes[i].value in statuses) checkboxes[i].checked = value;
@@ -458,15 +467,15 @@ function initCbs(id) {
   }
 }
 
-// Toggle all checkboxes of a Ref field or Search.
+// Toggle all checkboxes of a Ref field or Search
 function toggleAllCbs(id) {
   var elems = _rsplit(id, '_', 3);
-  // Get the DOM node corresponding to the Ref field.
+  // Get the DOM node corresponding to the Ref field
   var node = document.getElementById(elems[0] + '_' + elems[1]);
-  // Empty the array that stores checkbox statuses.
+  // Empty the array that stores checkbox statuses
   var statuses = node['_appy_' + elems[2] + '_cbs'];
   for (var key in statuses) delete statuses[key];
-  // Switch the array semantics.
+  // Switch the array semantics
   var semAttr = '_appy_' + elems[2] + '_sem';
   if (node[semAttr] == 'unchecked') node[semAttr] = 'checked';
   else node[semAttr] = 'unchecked';
@@ -892,7 +901,7 @@ function closePopup(popupId, clean) {
     // Reinitialise the enclosing iframe
     var iframe = container.getElementById('appyIFrame');
     iframe.style.width = null;
-    iframe.innerHTML = '';
+    while (iframe.firstChild) iframe.removeChild(iframe.firstChild);
     // Leave the form silently if we are on an edit page
     iframe.contentWindow.onbeforeunload = null;
   }
@@ -907,10 +916,10 @@ function backFromPopup() {
 
 function showAppyMessage(message) {
   // Fill the message zone with the message to display
-  var messageZone = document.getElementById('appyMessageContent');
+  var messageZone = getAjaxHook(':appyMessageContent');
   messageZone.innerHTML = message;
   // Display the message zone
-  var messageDiv = document.getElementById('appyMessage');
+  var messageDiv = getAjaxHook(':appyMessage');
   messageDiv.style.display = 'block';
 }
 
@@ -1172,12 +1181,12 @@ function onSelectObjects(nodeId, objectUrl, mode, sortKey, sortOrder,
   var node = document.getElementById(nodeId);
   var uids = stringFromDictKeys(node['_appy_objs_cbs']);
   var semantics = node['_appy_objs_sem'];
-  // Show an error message if no element is selected.
+  // Show an error message if no element is selected
   if ((semantics == 'checked') && (!uids)) {
     openPopup('alertPopup', no_elem_selected);
     return;
   }
-  // Close the popup.
+  // Close the popup
   closePopup('iframePopup');
   /* When refreshing the Ref field we will need to pass all those parameters,
      for replaying the popup query. */
@@ -1190,7 +1199,7 @@ function onSelectObjects(nodeId, objectUrl, mode, sortKey, sortOrder,
     askField(':'+nodeId, objectUrl, 'edit', params, false);
   }
   else {
-    // Link the selected objects and refresh the Ref view widget.
+    // Link the selected objects and refresh the Ref view widget
     params['action'] = 'onSelectFromPopup';
     askField(':'+nodeId, objectUrl, 'view', params, false);
   }
diff --git a/gen/wrappers/ToolWrapper.py b/gen/wrappers/ToolWrapper.py
index 9a4c522..f0eed3f 100644
--- a/gen/wrappers/ToolWrapper.py
+++ b/gen/wrappers/ToolWrapper.py
@@ -279,7 +279,7 @@ class ToolWrapper(AbstractWrapper):
       <!-- The message content -->
       <div id="appyMessageContent"></div>
      </div>
-     <script type="text/javascript" var="messages=ztool.consumeMessages()"
+     <script var="messages=ztool.consumeMessages()"
              if="messages">::'showAppyMessage(%s)' % q(messages)</script>''')
 
     # The page footer
diff --git a/gen/wrappers/__init__.py b/gen/wrappers/__init__.py
index ff5ac99..e944131 100644
--- a/gen/wrappers/__init__.py
+++ b/gen/wrappers/__init__.py
@@ -728,12 +728,16 @@ class AbstractWrapper(object):
              x=resp.setHeader('Content-Language', lang);
              x=resp.setHeader('Cache-Control', 'no-cache')">
 
-      <!-- If an action is defined, execute it on p_zobj or on p_field. -->
+      <!-- If an action is defined, execute it on p_zobj or on p_field -->
       <x if="action"
          var2="msg=ztool.executeAjaxAction(action, obj, field) or '';
                x=resp.setHeader('Appy-Message', msg)"></x>
 
-      <!-- Then, call the PX on p_obj or on p_field. -->
+      <!-- Consume and return any session message -->
+      <x var="msg=ztool.consumeMessages()" if="msg"
+         var2="x=resp.setHeader('Appy-Message', msg)"></x>
+
+      <!-- Then, call the PX on p_obj or on p_field -->
       <x if="not field">:getattr(obj, px[0])</x>
       <x if="field">:getattr(field, px[-1])</x>
      </x>''')