code thay đổi banner

<script language="Javascript">

images = new Array(5);

images[0]
 = "<a href = 'http://a2annhon1.forum2.biz/forum-f21/'
target='_blank'><img
src='http://img411.imageshack.us/img411/8463/26802822.jpg'
border='0'></a>";

images[1] = "<a href =
'http://a2annhon1.forum2.biz/forum-f21/' target='_blank'><img
src='http://img43.imageshack.us/img43/8448/45956211.jpg'
border='0'></a>";

images[2] = "<a href =
'http://a2annhon1.forum2.biz/forum-f21/' target='_blank'><img
src='http://img411.imageshack.us/img411/9088/49427011.jpg'
border='0'></a>";

images[3] = "<a href =
'http://a2annhon1.forum2.biz/forum-f21/' target='_blank'><img
src='http://img696.imageshack.us/img696/626/img0036jk.jpg'
border='0'></a>";

images[4] = "<a href =
'http://a2annhon1.forum2.biz/forum-f21/' target='_blank'><img
src='http://img696.imageshack.us/img696/626/img0036jk.jpg'
border='0'></a>";

index = Math.floor(Math.random() *
images.length);

document.write(images[index]);

</script>