var fadeimages = new Array;
var linkarr = new Array;
var noimg = new Array;
fadeimages[1] = "images/ad/001.jpg";
linkarr[1] = "/jinshubiaopai/";
noimg[1] = "images/ad/y1.gif";
fadeimages[2] = "images/ad/002.jpg";
linkarr[2] = "/zhusubiaopai/";
noimg[2] = "images/ad/y2.gif";
fadeimages[3] = "images/ad/003.jpg";
linkarr[3] = "shuijingdijiao/";
noimg[3] = "images/ad/y3.gif";
fadeimages[4] = "images/ad/004.jpg";
linkarr[4] = "/bomomianban/";
noimg[4] = "images/ad/y4.gif";
var cliImg = "";
var cliImgSrc = "";
var n = Math.round(Math.random() * 4);
var interval = 5500;
var setTimeId = "";
function rotateStop()
{
  clearTimeout(setTimeId);
}

function rotateStart()
{
  rotate();
}

function chki(ci, no)
{
  var pImg = document.all.RollImg;
  var pUrl = document.all.RollUrl;

  if(cliImg == "") {
    cliImg = ci;
    cliImgSrc = ci.src;
    ci.src = noimg[no];
    n=no;
    pImg.src = fadeimages[no];
    pUrl.href = linkarr[no];
  } else if(cliImg != ci) {
    cliImg.src = cliImgSrc;
    cliImg = ci;
    cliImgSrc = ci.src;
    ci.src = noimg[no];
    n=no;
    pImg.src = fadeimages[no];
    pUrl.href = linkarr[no]; 
  }
}

function rotate()
{
  n = (n >= 4) ? 1 : n+1; 
  setimgurl();
  setTimeId=setTimeout("rotate()",interval);
}

function setimgurl()
{
  var ci = eval("document.all.no_img"+n);

  document.all.RollImg.filters.blendTrans.apply();
  document.all.RollUrl.href=linkarr[n];
  document.all.RollImg.src=fadeimages[n];
  document.all.RollImg.filters.blendTrans.play();
  
  if(cliImg == "") {
    cliImg = ci;
    cliImgSrc = ci.src;
    ci.src = noimg[n];
  } else if(cliImg != ci) {
    cliImg.src = cliImgSrc;
    cliImg = ci;
    cliImgSrc = ci.src;
    ci.src = noimg[n];
  }
}