code: function(e){
  			var history=S.History, current = history.getFragment();
  			if(OLD_IE && current == history.fragment && history.iframe) current = history.getFragment(history.getHash(history.iframe));
  			if(current == history.fragment) return false;
  			if(history.iframe) history.navigate(current);
  			history.loadUrl();
  		}
docs: Checks the current URL to see if it has changed, and if it has, calls `loadUrl`, normalizing across the hidden iframe.