To make this :

1) First make an app

2) Take app id from apps

3) Must give domain name and  app domain therescreenshot_44

4) Then public it via share and reviewscreenshot_44
Then use this code, always take a look redirect uri

<a target=’_blank’ href=” Happenings May 2015&caption=HUB Happenings May 2015
&description=HUB Happenings May 2015.&redirect_uri=″><img alt=”Facebook” src=”” /></a>

Yahoo .. Task is done 🙂