1) Dashboard --> Design --> Page Elements --> Add a gadget --> HTML Javascript
<script src='http://www.vincentcheung.ca/jsencryption/jsencryption.js' type='text/javascript'></script><script type="text/javascript">if (window.jstiming) window.jstiming.load.tick('headEnd');</script> <!-- save your energy --><script language='javascript' src='http://www.onlineleaf.com/savetheenvironment.js' type='text/javascript'></script><!-- save your energy end --><script type='text/javascript'></script><script type='text/javascript'>
3) done , save !