漂浮层在火狐狸不兼容

漂浮层在火狐不兼容
<div id="advimg" style="position: absolute; top: 129px; width: 104px; height: 129px;
  z-index: 1; cursor: pointer; right: 1px;">
  <img src="../../Content/themes/images/lyjy.jpg" />
</div>

<script type="text/javascript">
  var advInitTop = 190;
  function move() {
  document.getElementById("advimg").style.pixelTop = advInitTop + document.documentElement.scrollTop;
  }
  window.onscroll = move;

</script>
图片随着滚动条滚动，在ie和360都能行，但是在火狐下面就不行，求大侠办给我看看

[解决办法]

JScript code

<script type="text/javascript">  var advInitTop = 190;  function move() {  document.getElementById("advimg").style.[color=#FF0000]top [/color]= (advInitTop + document.documentElement.scrollTop)+"px";  }  window.onscroll = move;</script>