网页加载过程提示正在加载的代码

<script language=javascript>
  <!--
  document.write('<div id=loadDiv style="padding-top: 100; padding-left: 100">'+
                 '页面正在载入，请等待<span id="loading"></span></div>');
  var setInterval1 = setInterval("loading.innerText += '.'", 300);
  var setInterval2 = setInterval("loading.innerText = ''", 15000);
  function window.onload()
  {
     hiddenDiv.style.display=""; //显示页面内容
     loadDiv.removeNode(true);
     clearInterval(setInterval1);
     clearInterval(setInterval2);
  }
  // -->
 </script>


<div id=hiddenDiv style="display: none">
<!--这里是网页的内容-->
</div>