jsp caching problem

Hello everybody,
 
I have a question regarding the caching of the html my jsp template produces.
 
I have the following template:
 
<%@ taglib uri="/WEB-INF/etc/taglibs/jstl/c" prefix="c" %>
<c:choose>
    <c:when test="${param.id != null }">
        id = <c:out value="${param.id}"/>
        </c:when>
        <c:otherwise>
            No id found
        </c:otherwise>
</c:choose>
 
The first request works fine, jsp is executed and the result is correct.
But all the following requests return the same html as the first request did, even if I change the url parameters (for ex, changing the value of the parameter id)
If I add /cache/off to the url, then the jsp works just fine.
 
Is there a way to disable the caching of the html output this jsp produces?
 
Note: above example is a testcase template, I would like to use this logic in the news template from the corporate_portal_v2 template set, to show a detailed view
of a news item when the parameter newsContainerId is set in the link(when coming from the news box)
 
Configuration: jahia 5.0.0 standard edition on WinXP/ Java 5
 
Kind regards,
 
Nicolas