function $(name)
{
	return document.getElementById(name);
}

function rdzxqh(id1,id2,src1,src2){
	var show = document.getElementById(id1);
	var unshow = document.getElementById(id2);
	show.src = src1;
	unshow.src = src2;
}
	  

function sleep(numberMillis) {
    var now = new Date();
    var exitTime = now.getTime() + numberMillis;
    while (true) {
        now = new Date();
        if (now.getTime() > exitTime)
            return;
    }
}

/* 广告图片收缩代码 */

var mh = 0;//高度
var step = 8;//每次变化的量
var ms = 10;//循环时间
function toggle(){
	sleep(2000);
   var o = document.getElementById("lh2");
  if (!o.tid)o.tid = "_" + Math.random() * 100;
  if (!window.toggler)window.toggler = {};
  if (!window.toggler[o.tid]){
    window.toggler[o.tid]={
      obj:o,
      maxHeight:o.offsetHeight,
      minHeight:mh,
      timer:null,
      action:1
    };
  }
  o.style.height = o.offsetHeight + "px";
  if (window.toggler[o.tid].timer)clearTimeout(window.toggler[o.tid].timer);
  window.toggler[o.tid].action *= -1;
  window.toggler[o.tid].timer = setTimeout("anim('"+o.tid+"')",ms );
}
function anim(id){
  var t = window.toggler[id];
  var o = window.toggler[id].obj;
  if (t.action < 0){
    if (o.offsetHeight <= t.minHeight){
      clearTimeout(t.timer);
	  changeAd();
      return;
    }
  }
  else{
    if (o.offsetHeight >= t.maxHeight){
      clearTimeout(t.timer);
	  changeAd();
      return;
    }
  }
  o.style.height = (parseInt(o.style.height, 10) + t.action * step) + "px";
  window.toggler[id].timer = setTimeout("anim('"+id+"')",ms );
}

function changeAd(){
	$("lh1").style.display = "";
	$("lh2").style.display = "none";
}