* http://only-perception.blogspot.com/2009/08/1000.html
 * http://www.openfoundry.org/index.php?option=com_content&task=view&id=2138&Itemid=353
 * http://blog.linux.org.tw/~jserv/archives/002116.html
 * http://www.cw.com.tw/article/index.jsp?id=38709
 * http://www.cheers.com.tw/doc/page.jspx?id=402881e8134e403a01134e4d5bd70ab1