var cm = new Array();
//Amazon(book 
cm[0]='<iframe src="http://rcm-jp.amazon.co.jp/e/cm?t=studiocfw-22&o=9&p=14&l=st1&mode=books-jp&search=%E5%A4%A7%E8%88%AA%E6%B5%B7%E6%99%82%E4%BB%A3&=1&fc1=&lt1=_blank&lc1=&bg1=&f=ifr" marginwidth="0" marginheight="0" width="160" height="600" border="0" frameborder="0" style="border:none;" scrolling="no"></iframe>'; 
//Amazon(Soft 
cm[1]='<iframe src="http://rcm-jp.amazon.co.jp/e/cm?t=studiocfw-22&o=9&p=14&l=st1&mode=software-jp&search=%E5%A4%A7%E8%88%AA%E6%B5%B7%E6%99%82%E4%BB%A3&=1&fc1=&lt1=_blank&lc1=&bg1=&f=ifr" marginwidth="0" marginheight="0" width="160" height="600" border="0" frameborder="0" style="border:none;" scrolling="no"></iframe>';
//Amazon(book-ship 
cm[2]='<iframe src="http://rcm-jp.amazon.co.jp/e/cm?t=studiocfw-22&o=9&p=14&l=st1&mode=books-jp&search=%E5%B8%86%E8%88%B9&=1&fc1=&lt1=_blank&lc1=&bg1=&f=ifr" marginwidth="0" marginheight="0" width="160" height="600" border="0" frameborder="0" style="border:none;" scrolling="no"></iframe>';
//Amazon(Toy-ship 
cm[3]='<iframe src="http://rcm-jp.amazon.co.jp/e/cm?t=studiocfw-22&o=9&p=14&l=st1&mode=toys-jp&search=%E5%B8%86%E8%88%B9&=1&fc1=&lt1=_blank&lc1=&bg1=&f=ifr" marginwidth="0" marginheight="0" width="160" height="600" border="0" frameborder="0" style="border:none;" scrolling="no"></iframe>';
//Amazon(food 
cm[4]='<iframe src="http://rcm-jp.amazon.co.jp/e/cm?t=studiocfw-22&o=9&p=14&l=bn1&mode=grocery-jp&browse=57239051&fc1=000000&lt1=&lc1=3366FF&bg1=FFFFFF&f=ifr" marginwidth="0" marginheight="0" width="160" height="600" border="0" frameborder="0" style="border:none;" scrolling="no"></iframe>';
//
document.write(cm[Math.floor(Math.random() * cm.length)]);