var numImgs = 0;
var curimg = 1;
var lastimg = 0;
var curpos = 0;
var imgobjlast;
var imgobjnext;
var imgtimer;
var imgheight = 160;
function startImgTrans() {
  if (numImgs < 2) { return; }
  imgobjlast = getElement("bimgcont");
  imgheight = imgobjlast.offsetHeight/(numImgs+1);
  curpos = imgheight;
  lastimg = curimg;
  curimg++;
  if (curimg > numImgs) { curimg = 1; }
  imgtimer = setInterval(imgMv,40);
}
function imgMv() {
  if (curpos < 1) { clearInterval(imgtimer); setTimeout(startImgTrans, 5000); return; }
  if (curpos < 3) { curpos -= 2; }
  else if (curpos < 4) { curpos -= 3; }
  else if (curpos < 11) { curpos -= 5; }
  else { curpos -= 10; }

  var lasth = (1-lastimg)*imgheight - (imgheight - curpos);
  imgobjlast.style.top = lasth+"px";
}

function getElement(objID) {
  if (document.getElementById) {
    return document.getElementById(objID);
  }
  else if (document.all) {
    return document.all(objID);
  }
  else if (document.layers) {
    document.layers(objID);
  }
}