How to detect if a jsp page is a popup

[nevam]

Hi,
This is my solution:

<c:set var="popUp">0</c:set>
<req:existsQueryString name="popUp" value="true">
<c:set var="popUp">1</c:set>
</req:existsQueryString>

<c:set var="ABC">0</c:set>
<req:equalsCookie name="ABC" match="true" value="true">
<c:set var="ABC">1</c:set>
</req:equalsCookie>

<c:if test="${(popUp == 1) || (ABC== 1)}">

</c:if>