How to customize facebook share and like button

Copy the following code in your html page.

Example : Customize facebook share button. 

1. <script>  
2. function fbs_click(share_this) {  
3. var txtLink = document.getElementById(share_this);  
4. var a = txtLink.getElementsByTagName('a');  
5. if (a != null && a.length > 0) {  
6.     var setLink = txtLink.parentNode.getElementsByTagName('a');  
7.     if (setLink != null && setLink.length > 0) {  
8.         t= a[0].title;  
9.         u= a[0].href;  
10.     }  
11. }  
12. window.open(u+'&t='+encodeURIComponent(t),'sharer','toolbar=0,status=0,width=626,height=436');return false;  
13. }</script>  
14. <div id="share_this">  
15. <a href="http://www.facebook.com/sharer.php?u=http%3A%2F%2Fwww.phptechi.com/Fmagento-display-banners-for-category-page.html" type="box_count" onclick="return fbs_click('share_this')" title="phptechi" target="_blank">Share this</a>  
16.   
17. </div>