if(typeof(isfirst)!="undefined") alert("漫漫播广告代码在同一个页面只能放一个，请去掉多余的代码！");
            isfirst = true;
            document.write('<iframe scrolling="no" height="91" frameborder="0" align="center,center" width="951" src="http://www.manmanbo.com/selfservead/adiframe?tid=0&aid=298" allowtransparency="" marginheight="0" marginwidth="0"/></iframe>');