// JavaScript Document
var sponsor = 0;
<!-- 依 sponsor 值跳到其位址 -->
function GoSponsor() {
//if (sponsor==1) window.open('http://www.taiwanus.net/','','');
if (sponsor==0) window.open('http://www.taiwanus.net/','','');
if (sponsor==2) window.open('http://www.taiwanus.net/news/showevent.php?subclass=廠商&videoid=廠商&subname=廠商頻道','','');
if (sponsor==3) window.open('http://www.taiwanus.net/news/showevent.php?subclass=旅遊&videoid=旅遊&subname=旅遊頻道','','');
if (sponsor==4) window.open('http://www.taiwanus.net/housing','','');
if (sponsor==1) window.open('http://www.taiwanus.net/news/news/2008/200810231539451297.htm','','');
//if (sponsor==2) window.open('http://www.taiwanus.net/news/showevent.php?subclass=un,聯合國&videoid=un,聯合國&subname=台灣－前進聯合國','','');

  }
<!-- 以 sponsor 為變數作為顯示圖片的選擇 -->
function rotate() {
   if (++sponsor >4)  sponsor = 1;
if (sponsor==1) document.book.src = "http://www.taiwanus.net/images/economic.gif";
if (sponsor==2) document.book.src = "http://www.taiwanus.net/images/chanel01.jpg";
if (sponsor==4) document.book.src = "http://www.taiwanus.net/images/chanel03.jpg";
//if (sponsor==3) document.book.src = "http://www.taiwanus.net/media/lin/paullin.jpg";
if (sponsor==3) document.book.src = "http://www.taiwanus.net/images/chanel02.jpg";
if (sponsor==0) document.book.src = "http://www.taiwanus.net/images/million.jpg";
//if (sponsor==0) document.book.src = "http://www.taiwanus.net/images/parents.jpg";
   window.setTimeout('rotate();',5000);
}