In ContentObject.from_ccnb, allow content to be null.
diff --git a/js/ContentObject.js b/js/ContentObject.js
index 0427df6..71aed69 100644
--- a/js/ContentObject.js
+++ b/js/ContentObject.js
@@ -140,13 +140,13 @@
 			this.signedInfo = new SignedInfo();
 			this.signedInfo.from_ccnb(decoder);
 		}
-		
-		this.content = decoder.readBinaryElement(CCNProtocolDTags.Content);
 
+        if (decoder.peekTypeAndVal() == null)
+            this.content = null;
+        else
+            this.content = decoder.readBinaryElement(CCNProtocolDTags.Content);
 		
-		//this.endContent = decoder.offset;
 		this.endSIG = decoder.offset;
-
 		
 		decoder.readEndElement();