var home_tonglan = '<DIV class=fatbutton><A href="http://wisky.cn/adStatistic/goto.php?id=45" '+'target=_blank><IMG height=50 alt="" '+'src="http://www.pkfat.com/just_pic/xiaotonglan.gif" width=510></A></DIV>';
document.getElementById('home_tonglan').innerHTML = home_tonglan;