<div class="cr">
  <div class="cr-l"><img src="img/fatherCh.png" alt=""/></div>
  <div class="cr-icon">
   <div id="cr-icon">
    <img style="left:5%" src="img/gift2.png" alt=""/>
    <img style="left:25%" src="img/gift2.png" alt=""/>
    <img style="left:45%" src="img/gift2.png" alt=""/>
    <img style="left:65%" src="img/gift2.png" alt=""/>
    <img style="left:85%" src="img/gift2.png" alt=""/>
   </div>
  </div>
  <div class="cr-r"><img src="img/family.png" alt=""/></div>
 </div>

html, body {
   height: 100%;
   margin: 0;
   padding: 0;
      }
  .cr{
   width: 100%;
   position: relative;
   background: url("../img/bg.png") no-repeat 0 0;
   -webkit-background-size: 100% 100%;
   background-size: 100% 100%;
   overflow: hidden;
  }
  .cr-l,.cr-r{
   position: absolute;
   bottom:10%;
   width: 20.8%;
   height: 70%;
   z-index:100;
  }
  .cr-l img,.cr-r img{
   width: 100%;
   position: absolute;
   top:50%;
  }
  .cr-l{
   left: 0;
  }
  .cr-r{
   right:0;
  }
  .cr-icon{
   bottom: 15%;
   left:0;
   position: absolute;
   z-index: 1000;
   width: 100%;
   height: 70%;
   text-align: center;
  }
  .cr-icon img{
   margin-right: 25px;
   width: 10%;
   vertical-align: top;
   position: absolute;
   bottom: 0;
   opacity: 1;
   transform:rotate(0deg);
   transition: all 1s;
  }
  .cr-icon img:first-child{
   transform:rotate(-90deg);
   -webkit-transform:rotate(-90deg);
   opacity: 0;
   width: 0;
  }
  .cr-icon img:last-child{
   transform:rotate(90deg);
   -webkit-transform:rotate(90deg);
   opacity: 0;
   width: 0;
  }

$(function() {
  // 点击礼物图片，切换图片
  $('#cr-icon img').click(function(){
   if($(this).attr('src') == 'img/gift2.png'){
    $(this).attr('src','img/gift.png');
   }else{
    $(this).attr('src','img/gift2.png');
   }
  });
  var timer = null;
  var oImg = $('#cr-icon img');
  var end = document.body.clientWidth;
  var height = document.body.scrollHeight;
  // 设置高
  $(".cr").css("height",height);
  // 设置图片的初始位置
  for(var i=0;i<oImg.length;i++){
   $(oImg[i]).css('left', 5+i*20+'%');
  }
  // 图片轮换函数
  function scrollLogo(){
   oImg.each(function(){
    var left = parseInt($(this).css('left'));
    left += end * 0.2;
    $(this).css('left',left);
   });
   $('#cr-icon img:last').insertBefore('#cr-icon img:first').css('left',end * 0.05);
  }
  scrollLogo();
  // 定时器，开始轮换
  timer = setInterval(scrollLogo,1800);
  // 鼠标移入清楚轮换
  oImg.mouseover(function(){
   clearInterval(timer);
  });
  // 鼠标移出开始轮换
  oImg.mouseleave(function() {
   timer = setInterval(scrollLogo,1800);
  });
 });