subnode test

static/nb.js

@@ -38,6 +38,9 @@ function nbInit(a,b){
     else if (typeof b === "string"){
         root = searchElement(document, a)[0];
     }
+    if (typeof $s === "undefined"){
+        $s = {}
+    }
 
     function nBind(callback, prop, direction){
         direction = direction || "write";