//Ò³Ãæ tab±ä»¯,
function setTab(n,number){
var menuLi=document.getElementsByName("menu");
var mainUl=document.getElementById("main").getElementsByTagName("ul");
for(i=0;i<menuLi.length;i++){
   menuLi[i].childNodes.item(0).src=i==n?"/CN_2/images/index_click_"+(number+i)+".jpg":"/CN_2/images/indexpage_"+(number+i)+".jpg";
   mainUl[i].style.display=i==n?"block":"none";
  
}
}