3 <script src="inspector-wrappers-test-utils.js"></script>
7 document.body.__defineGetter__("__treeElementIdentifier", function() {
8 try { doAttack(); } catch(ex) { }
9 return this.___treeElementIdentifier;
11 document.body.__defineSetter__("__treeElementIdentifier", function(val) {
12 this.___treeElementIdentifier = val;
15 <script>instructions({trigger: "Collapse and expand the <body/> tag"});</script>