通过js脚本实现根据网址域名显示或执行不同内容，参考代码：

湘ICP备<a href="http://www.beian.gov.cn" id="BeiAnHao" style="color:#FFFFFF;" target="_blank">05000001</a>号
<script>
var yuming = window.location.host;
if (yuming == "www.sem.org.cn" || yuming == "sem.org.cn") {
  document.getElementById("BeiAnHao").innerHTML = "05000002";
}
else if (yuming == "www.sem.org.cn.cn" || yuming == "sem.org.cn.cn") {
  document.getElementById("BeiAnHao").innerHTML = "05000003";
}
else if (yuming == "www.sem.org.cn" || yuming == "sem.org.cn") {
  document.getElementById("BeiAnHao").innerHTML = "05000004";
}
</script>