when you visit some link of this， and then if you click the back button of the web browser，you will find you can't get the right menu item and url address，but the content displayed is right. And,you need back again, then you are able to watch the right URL and actived menu item.
when you visit some link of this， and then if you click the back button of the web browser，you will find you can't get the right menu item and url address，but the content displayed is right. And,you need back again, then you are able to watch the right URL and actived menu item.