<span id="demo" src="demo.html" style="behavior:url(#default#download);"></span>
<script language="javascript">
  <!--
  function window.onload(){
    demo.startDownload(demo.src,fnDownload);
  }
  function fnDownload(oS){
    demo.innerHTML = oS;
  }
  //-->
</script>

demo.html
<span style="color:red;font:bold 12px Tahoma;"></span>