var isStart=true;
var nn;
var tt;
var bPlay=new Image;
bPlay.src = "images/bu_pla.gif";
var bPause=new Image;
bPause.src = "images/bu_pau.gif";
nn=1;
setTimeout('change_img()',9000);
function resetPlay(){
isStart=true;
var e = document.getElementById("top_slider");
var a = e.getElementsByTagName("img");
for(i=0;i<a.length;i++){
 if(a[i].src == bPlay.src) a[i].src = bPause.src;
}
}
function playorpau(e){
if(e.src == "images/bu_pau.gif"){
e.src = bPlay.src ;
isStart = false;
}else{
e.src = bPause.src;
isStart = true;
}
}
function pre_img(){
resetPlay();
nn--;
if(nn < 1) nn=3;
setFocus(nn);
}
function next_img(){
resetPlay();
nn++;
if(nn > 3) nn=1;
setFocus(nn);
}
function change_img()
{
if(isStart){
 nn++;
 if(nn>3) nn=1;
 setFocus(nn);
 }else{
 tt=setTimeout('change_img()',9000);
 }
}
function setFocus(i)
{
 if(tt) clearTimeout(tt);
 nn = i;
 selectLayer1(i);
 tt=setTimeout('change_img()',9000);
}
function selectLayer1(i)
{
 switch(i)
 {
 case 1:
document.getElementById("bbs_s1").style.display="block";
document.getElementById("bbs_s2").style.display="none";
document.getElementById("bbs_s3").style.display="none";
 break;
case 2:
document.getElementById("bbs_s1").style.display="none";
document.getElementById("bbs_s2").style.display="block";
document.getElementById("bbs_s3").style.display="none";
 break;
 case 3:
document.getElementById("bbs_s1").style.display="none";
document.getElementById("bbs_s2").style.display="none";
document.getElementById("bbs_s3").style.display="block";
 break;
 }
}


function showtime(){
now=new Date();
shi=now.getHours();
fen=now.getMinutes();
miao=now.getSeconds();
ff=now.toLocaleString();
aba=now.getYear();
bbb=now.getMonth()+1;
cc=now.getDate();
xin=now.getDay();
wek=new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
if(shi<10)
{
shi="0"+shi
}
if(fen<10)
{
fen="0"+fen
}
if(miao<10)
{
miao="0"+miao
}
ss.innerText=(""+aba+"年"+bbb+"月"+cc+"日"+"/"+wek[xin])
setTimeout("showtime();",1000);
}