<script type="text/javascript">
  var progressId = "ProgressBarID";
  function setProgressBar(progress) {
   if (progress) {
    $("#" + progressId + " > div").css("width", String(progress) + "%");
    $("#" + progressId + " > div").html(String(progress) + "%");
   }
  }
  var i_ProgressBar = 0;
  function doProgressBarLoading() {
   if (i_ProgressBar > 100) {
    alert("加载完毕");
    return;
   }
   if (i_ProgressBar <= 100) {
    setTimeout("doProgressBarLoading()", 10);
    setProgressBar(i_ProgressBar);
    i_ProgressBar++;
   }
  }
  function setProgressBarCss() {
   $("#" + progressId + "").css({ "width": "300px", "height": "25px" });
   $("#" + progressId + " > div").css({ "height": "25px", "background-color": "#e0e0e0", "text-align": "center" });
  }
  $(document).ready(function () {
   setProgressBarCss();
   doProgressBarLoading();
  });
</script>

<div id="ProgressBarID">
 <div>
 </div>
</div>