I searched for this widget the whole day both at school and also at home. After the third attempt, I finally got it right. The instructions for you to install this simple and useful multi-tabbed widget can be found at trickstutor. It is very easy to edit and add this widget to your blog. You can easily control the number of tabs in the widget.
Your widget should look like this:
So, it’s better for you to try it out now, especially to those with wide sidebar like mine. Good luck!