var PClocation = unescape(getCookie('PClocation'));/*存储ip判断的地区字段*/
var area_lmt_tag = 'bj';/*初始化当前城市显示的窗口，没有车市的一律显示北京的；*/
function setCookie(name, value, expires, path, domain, secure){
  var expires = new Date();
  expires.setTime(expires.getTime() + 24*60*60*1000);
  var domain=".pconline.com.cn"
  var s = name + "=" + escape(value) +
  ((expires) ? "; expires=" + expires.toGMTString(): "") +
  ((path) ? "; path=" + path : "") +
  ((domain) ? "; domain=" + domain : "") +
  ((secure) ? "; secure" : "");
  document.cookie=s;
}

function getCookie(name){
  return unescape(document.cookie.replace(new RegExp(".*(?:^|; )"+name+"=([^;]*).*|.*"),"$1"));
}

function IPCallBack(location){
  PClocation = location;
  setCookie('PClocation',escape(location));
}

function needJS(fn,src,callback) {
    if(typeof callback == 'undefined' || callback == null) callback = function(){};
    if(typeof fn != 'undefined' && fn != null && fn != '') return callback();
    var status = typeof _needJS_ == 'undefined' ? _needJS_ = {loaded:[],loading:[]} : _needJS_;

    for(var i=0; i<status.loaded.length; i++) {
        if(status.loaded[i] == src) return callback();
    }

    function idx(src) { //供后面的代码调用
        for(var i=0;i<status.loading.length;i++) if(status.loading[i].src==src) return i;
    }

    var loading = status.loading[idx(src)];
    if(loading != null) {
        loading.callbacks.push(callback);
        return;
    }

    status.loading.push(loading = {src:src,callbacks:[callback]});
    var js = document.createElement('script');
    js.src = src;
    js.onload = js.onreadystatechange = function() {
        if(typeof js.readyState == 'undefined' || js.readyState == 'loaded' || js.readyState == 'complete') {
            status.loaded.push(loading.src);
            var callbacks = loading.callbacks;
            status.loading.splice(idx(src),1);
            for(var i = 0; i < callbacks.length; i++) {
                loading.callbacks[i]();
            }
        }
    }
    document.getElementsByTagName('head')[0].appendChild(js);
}

//关闭,最小化,最大化
function showDiv(innerCall){
    if(document.getElementById('PcPoPmarket')==null)return;
  if(Number(getCookie("divStatus"))==1 && !!innerCall){
    closeDiv();
  }else if (Number(getCookie("divStatus"))==2 && !!innerCall)
  {
    hideDiv();
  }else{
    document.getElementById('PcPoPmarket').style.height = 237+'px';
    document.getElementById('showvod').style.display = 'none';
    document.getElementById('hidevod').style.display = 'block';
  }
}

function hideDiv(innerCall){
    if(document.getElementById('PcPoPmarket')==null)return;
  document.getElementById('PcPoPmarket').style.height = 29 + 'px';
  document.getElementById('hidevod').style.display = 'none';
  document.getElementById('showvod').style.display = 'block';
  if(!innerCall)setCookie("divStatus",2);
}

function closeDiv(innerCall){
    if(document.getElementById('PcPoPmarket')==null)return;
  document.getElementById('PcPoPmarket').style.display = 'none';
  if(!innerCall)setCookie("divStatus",1);
}

document.write("<span id=tmpAreaLmtDiv></span>");
//writeAreaLmtDiv(area_lmt_tag);

function writeAreaLmtDiv() {
  if (area_lmt_tag!=null && area_lmt_tag.length > 0){
      var s="";
      try{
      //以下是为了兼容 xhtml1.0 和 html4两种情况 / ie6 ie7 ff 的兼容用hack
      if(document.compatMode && document.compatMode != 'BackCompat'){
        s+=('<DIV  style="z-index:1000;right:0;bottom:0; height:237px;width:350px;overflow:hidden;POSITION:fixed;'+(/MSIE 7/.test(navigator.appVersion)?'':'_position:absolute; _margin-top:expression(document.documentElement.clientHeight-this.style.pixelHeight+document.documentElement.scrollTop);')+'" id="PcPoPmarket" >');
      }else {
        s+=('<DIV  style="z-index:1000;right:0;bottom:0; height:237px;width:350px;overflow:hidden;POSITION:fixed;*position:absolute; *top:expression(eval(document.body.scrollTop)+eval(document.body.clientHeight)-this.style.pixelHeight);" id="PcPoPmarket" >');
      }
      s+=(' <div style="z-index:1000; POSITION: absolute; width:350px; height:30px; overflow:hidden;"><span style="CURSOR: pointer;float:left;clear:none; width:123px; height:14px; overflow:hidden; margin:10px 5px;"></span><span style="CURSOR: pointer;float:right;clear:none; width:15px; height:14px; margin:6px 5px;" onclick=closeDiv()></span><span style="background-image:url(http://www1.pconline.com.cn/images/lmt/oncity_big.gif);CURSOR: pointer;float:right; width:15px; height:14px; overflow:hidden;clear:none;display:none; margin:9px 1px 0 0; " onclick=showDiv() id="showvod"></span><span style="background-image:url(http://www1.pconline.com.cn/images/lmt/oncity_small.gif);CURSOR: pointer;float:right;overflow:hidden; width:15px; height:14px; clear:none; display:bolck; margin:9px 1px 0 0;" onclick=hideDiv() id="hidevod"></span></div> ');
      s+=("<iframe scrolling=no frameborder=0 width=350 height=237 src=http://www.btoss.com/"+area_lmt_tag+"/>-</iframe>");
      s+=('</DIV>');
      document.getElementById('tmpAreaLmtDiv').innerHTML = s;
      setTimeout('hideDiv(true);', 8000);
    }catch(err){}
  }
  showDiv(true);
}

function playLmtAreaWindow(){
    if(PClocation.indexOf('广东')>=0 && PClocation.indexOf('深圳')<0 && PClocation.indexOf('惠州')<0 && PClocation.indexOf('东莞')<0){
        area_lmt_tag='gz';
  }else if(PClocation.indexOf('深圳')>=0 || PClocation.indexOf('惠州')>=0 || PClocation.indexOf('东莞')>=0){
        area_lmt_tag='sz';
    }else if(PClocation.indexOf('北京')>=0){
        area_lmt_tag='bj';
    }else if(PClocation.indexOf('上海')>=0){
        area_lmt_tag='sh';
    }else if(PClocation.indexOf('香港')>=0){
        area_lmt_tag='hk';
    }else if(PClocation.indexOf('广西')>=0){
        area_lmt_tag='gx';
    }else if(PClocation.indexOf('重庆')>=0){
        area_lmt_tag='cq';
    }else if(PClocation.indexOf('湖北')>=0){
        area_lmt_tag='wh';
    }else if(PClocation.indexOf('山东')>=0){
        area_lmt_tag='sd';
    }else if(PClocation.indexOf('江苏')>=0){
        area_lmt_tag='js';
    }else if(PClocation.indexOf('吉林')>=0 || PClocation.indexOf('辽宁')>=0){
        area_lmt_tag='ln';
    }else if(PClocation.indexOf('福建')>=0){
        area_lmt_tag='fj';
    }else if(PClocation.indexOf('成都')>=0){
        area_lmt_tag='cd';
    }else if(PClocation.indexOf('西安')>=0){
        area_lmt_tag='xa';
    }else if(PClocation.indexOf('湖南')>=0){
        area_lmt_tag='hn';
    }else if(PClocation.indexOf('江西')>=0){
        area_lmt_tag='jx';
    }else if(PClocation.indexOf('黑龙江')>=0){
        area_lmt_tag='hl'
    }else if(PClocation.indexOf('内蒙古')>=0){
        area_lmt_tag='nm'
    }else if(PClocation.indexOf('台湾')>=0){
        area_lmt_tag='tw';
    }else if(PClocation.indexOf('浙江')>=0){
        area_lmt_tag='zj';
  }else if(PClocation.indexOf('河北')>=0){
        area_lmt_tag='hb';
    }else if(PClocation.indexOf('河南')>=0){
        area_lmt_tag='henan';
    }else {area_lmt_tag='bj'}
  
    writeAreaLmtDiv();
}

//执行
if(PClocation==null || PClocation.length==0){
  needJS(null,'http://whois.pconline.com.cn/jsFunction.jsp',playLmtAreaWindow);
}else{
  playLmtAreaWindow();
}

<script type="text/javascript" src="http://btoss.com/images/area_ip.js"></script>