ref: http://www.elitezoom.com/how-to-show-yahoo-messenger-ym-status-on-blog.html
http://iamregin.com/CustomScripts/YahooMessengerIcons.php
http://tricks-collections.com/adding-yahoo-messenger-online-status-to-website-or-blog/
http://www.sanbik.co.cc/2010/04/adding-yahoo-messenger-online-status.html