用于设置字体大小
<SCRIPT language=javascript>
 function ContentSize(size)
 {
  var obj=document.all.BodyLabel;
  obj.style.fontSize=size+"pt";
    obj.style.lineHeight='120%';
 }
</SCRIPT>

<span id="BodyLabel" name="BodyLabel">demo</span>

<a href='javascript:ContentSize(20)'>20号字</a>

用于播放广告后自动隐藏
<SPAN id="AD" name="AD">这里放置Flash广告(播放2秒后自动关闭)</SPAN><br>

<SCRIPT LANGUAGE="JavaScript">

function hideAD(){
var obj=document.all.AD;
obj.style.display="none";
}

setTimeout('hideAD()',2000);
</SCRIPT>

<a href='javascript:ContentSize(20)'>20号字</a>