<!-- 要实现此效果需要 1 个步骤： -->
<!-- 第 1 步： -->
<!-- 把下面的代码加到<BODY></BODY>区域中： -->
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
jsver = "1.0";
// End -->
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript1.1">
<!-- Begin
jsver = "1.1";
// End -->
</SCRIPT>
<SCRIPT Language="JavaScript1.2">
<!-- Begin
jsver = "1.2";
// End -->
</SCRIPT>
<SCRIPT Language="JavaScript1.3">
<!-- Begin
jsver = "1.3";
// End -->
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
document.write("<B>Your browser supports JavaScript version " + jsver + ".</B>")
// End -->
</SCRIPT>