Twitter follower badge

Hello there,
I want to install twitter follower badge, so that I can get a floating twitter badge floating edge on right hand side.
Follow is the code for twitter follower badge
<!-- twitter follow badge by go2web20 -->
<script src='http://files.go2web20.net/twitterbadge/1.0/badge.js' type='text/javascript'></script><script type='text/javascript' charset='utf-8'><!--
tfb.account = 'ricky709';
tfb.label = 'follow-me';
tfb.color = '#35ccff';
tfb.side = 'r';
tfb.top = 136;
tfb.showbadge();
--></script>
<!-- end of twitter follow badge -->
Where should I put this script?????????????