代码如下:
<script language=javascript>
var how_many_ads = 5
var now = new date()
var sec = now.getseconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1){
url=;
alt=ad1;
banner=图片/01.jpg;
width=440;
height=230;
}
if (ad==2) {
url=;
alt=ad2;
banner=图片/02.jpg;
width=440;
height=230;
}
if (ad==3) {
url=;
alt=ad3;
banner=图片/03.jpg;
width=440;
height=230;
}
if (ad==4) {
url=;
alt=ad4;
banner=images/04.jpg;
width=440;
height=230;
}
if (ad==5) {
url=;
alt=ad5;
banner=图片/05.jpg;
width=440;
height=230;
}
document.write('<center>');
document.write('<a href=\' + url + '\ target=\_blank\>');
document.write('<img src=\' + banner + '\ width=')
document.write(width + ' height=' + height + ' ');
document.write('alt=\' + alt + '\ border=0>
');
document.write('</center>');
--></script>