--- a/record.js
+++ b/record.js
@@ -1,5 +1,26 @@
 'use strict';
 
+/** Copyright (c) 2012 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
+  *
+  * Permission is hereby granted, free of charge, to any person obtaining a copy
+  * of this software and associated documentation files (the "Software"), to
+  * deal in the Software without restriction, including without limitation the
+  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  * sell copies of the Software, and to permit persons to whom the Software is
+  * furnished to do so, subject to the following conditions:
+  *
+  * The above copyright notice and this permission notice shall be included in
+  * all copies or substantial portions of the Software.
+  *
+  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+  * IN THE SOFTWARE.
+  */
+
 var Record = function(jid, child) {
   this.creator = jid;
   this.creationDate = new Date; //FIXME: non-standard?
@@ -31,7 +52,7 @@ Record.prototype = {
     }
   },
   toDOM: function(records, dom) {
-    var element;
+    var element = null;
     if (this.parent)
       dom = records[this.parent].dom;
 
@@ -61,6 +82,9 @@ Record.prototype = {
       case 'comment':
         element = document.createComment(this.chdata);
         break;
+      default:
+        console.log('BIG WARNING! Element type not supported.');
+        return;
     }
 
     dom.appendChild(element);