<body>
<c-rt:choose>
<c-rt:when test="<%=request.getHeader(\"User-Agent\").indexOf(\"MSIE\")!=-1%>">
You are using Internet Explorer
</c-rt:when>
<c-rt:otherwise>
You are using Netscape, or some other browser....
</c-rt:otherwise>
</c-rt:choose>
</body>
</html>