lastScrollY=0;
function S(o){ return document.getElementById(o);}
function heartBeat(){
  var diffY;
  if (document.documentElement && document.documentElement.scrollTop){ diffY = document.documentElement.scrollTop; }
  else if (document.body){ diffY = document.body.scrollTop; }
  else{}
  percent=.1*(diffY-lastScrollY);
  if(percent>0){ percent=Math.ceil(percent); }
  else{ percent=Math.floor(percent); }
  S("chinasky_adL").style.top=parseInt(S("chinasky_adL").style.top)+percent+"px";
  S("chinasky_adR").style.top=parseInt(S("chinasky_adR").style.top)+percent+"px";
  lastScrollY=lastScrollY+percent;
}


chinasky_adL = '<div id="chinasky_adL" class="chinasky_adL" style="left:2px;position:absolute;top:120px;"> \
                <p class="pic">'+side_picL+'</p> \
                <p class="text"><a href="javascript:;" id="chinasky_btnL">关闭</a></p> \
                </div>';
chinasky_adR = '<div id="chinasky_adR" class="chinasky_adR" style="right:2px;position:absolute;top:120px;"> \
                <p class="pic">'+side_picR+'</p> \
                <p class="text"><a href="javascript:;" id="chinasky_btnR">关闭</a></p> \
                </div>';
                
if(side_picL=='' && side_picR==''){
chinasky_adL = '<div id="chinasky_adL" class="chinasky_adL" style="left:2px;position:absolute;top:120px;"> \
                <p class="pic">'+side_picL+'</p> \
                <p class="text"><a href="javascript:;" id="chinasky_btnL"></a></p> \
                </div>';
chinasky_adR = '<div id="chinasky_adR" class="chinasky_adR" style="right:2px;position:absolute;top:120px;"> \
                <p class="pic">'+side_picR+'</p> \
                <p class="text"><a href="javascript:;" id="chinasky_btnR"></a></p> \
                </div>';
}

document.write(chinasky_adL + chinasky_adR);
window.setInterval("heartBeat()",1);

window.onload = function(){
  S("chinasky_btnL").onclick=function(){
    var cName = this.innerText;
    if(cName=='关闭'){
      S("chinasky_btnL").innerText = '查看';
      S("chinasky_adL").className = 'chinasky_adL chinasky_close';
    }else{
      S("chinasky_btnL").innerText = '关闭';
      S("chinasky_adL").className = 'chinasky_adL';
    }
  };
  S("chinasky_btnR").onclick=function(){
    var cName = this.innerText;
    if(cName=='关闭'){
      S("chinasky_btnR").innerText = '查看';
      S("chinasky_adR").className = 'chinasky_adR chinasky_close';
    }else{
      S("chinasky_btnR").innerText = '关闭';
      S("chinasky_adR").className = 'chinasky_adR';
    }
  };
}