banner = new Array(3); 
    banner[0] = "<a href='http://www.youtube.com/results?search_query=%E5%8F%B0%E7%81%A3%E5%8A%A0%E6%B2%B9'  target='_blank'><img src='banner_link/data/taiwan.gif' border=0></a>"; //台灣加油
    banner[1] = "<a href='http://www.youtube.com/results?search_query=pray%20for%20japan'  target='_blank'><img src='banner_link/data/pray4japan.jpg' border=0></a>"; //日本祈福
    banner[2] = "<a href='http://www.childrenhome.org.tw'  target='_blank'><img src='banner_link/data/ccsa.gif' border=0></a>"; //CCSA
    index = Math.floor(Math.random() * banner.length); 
    document.write(banner[index]);