[code:js]
dojo._contentHandlers.json = (function(old){
  return function(xhr){
    var json = old(xhr);
    if(json.updated){
      processUpdatedObjects(json.updated);
      delete json.updated;
    }
    return json;
  }
})(dojo._contentHandlers.json);

[code:js]
dojo.xhrGet({
  url: "node-updates.php",
  handleAs: "node-update-server"
});

dojo.xhrGet({
  url: "node-content.php?node=sidebar",
  node: "sidebar",
  handleAs: "node-update"
});

[code:js]
dojo.mixin(dojo._contentHandlers, {
  "node-update-server": function(xhr){
    var json = dojo._contentHandlers.json(xhr);
    dojo.forEach(json.updates, function(update){
      var node = dojo.byId(update.id);
      if(node){
        node.innerHTML = update.html;
      }
    });
  },
  "node-update": function(xhr){
    var node = dojo.byId(xhr.args.node);
    if(node){
      node.innerHTML = dojo._contentHandlers.text(xhr);
    }
  }
});