function Tab(name,cursel,n){
for(i=1;i<=n;i++){
var menu=document.getElementById(name+i);
var con=document.getElementById("tab_"+name+"_"+i);
menu.className=i==cursel?"hover":"hide";
con.style.display=i==cursel?"block":"none";
}
}
var currslid = 0;
var slidint;
function setfoc(id){
 document.getElementById("focpic").src = picarry[id];
 document.getElementById("foclnk").href = lnkarry[id];
 currslid = id;
 for(i=0;i<5;i++){
  document.getElementById("tmb"+i).className = "thubpic";
 };
 document.getElementById("tmb"+id).className ="thubpiccur";
 focpic.style.visibility = "hidden";
 if (focpic.style.visibility == "visible") {
  focpic.style.visibility = "hidden";
 }
 else {
  focpic.style.visibility = "visible";
 }
 stopit();
}
function playnext(){
 if(currslid==4){
  currslid = 0;
 }
 else{
  currslid++;
 };
 setfoc(currslid);
 playit();
}
function playit(){
 slidint = setTimeout(playnext,4500);
}
function stopit(){
 clearTimeout(slidint);
 }
window.onload = function(){
 playit();
}
var picarry = {};
var lnkarry = {};
picarry[0] = "image/01.jpg";
lnkarry[0]  = "http://www.ytxinhai.com/about_1.html";
picarry[1] = "image/02.jpg";
lnkarry[1]  = "http://www.ytxinhai.com/service_1_11.html";
picarry[2] = "image/03.jpg";
lnkarry[2]  = "http://www.ytxinhai.com/proshow_3_3.html";
picarry[3] = "image/04.jpg";
lnkarry[3]  = "http://www.ytxinhai.com/index.html";
picarry[4] = "image/05.jpg";
lnkarry[4]  = "http://www.ytxinhai.com/about_3.html";