title: In bootstrap 3.0 affix how to set active class
body: <p>I have navigation with bootstrap affix and want to change the active li when scrolling. I have tried what ever given in the documentation but couldn't fix it. Could some one help me for fixing it? You can see my page in the url <a href="http://www.thephpcode.com/help/website-generation-using-pcg.html" rel="nofollow">http://www.thephpcode.com/help/website-generation-using-pcg.html</a></p>