Display non-Jahia data in main area after clicking on box

I hava a box displaying the "member of the week". The members are not held 
in Jahia containers, but in an external user management store. Now, when 
clicking on the "member of the week", his details should be displayed in 
the main area of the page. I can make a JSP to display this details, but I 
do not want to display only this JSP in a popup. It should be embedded in 
the Jahia page, that means all other boxes shold stay around. 

The "member of the week" box can be on any page based on any template, 
which allows adding boxes. 
So it is similar as the sitemap and searchresult, which can be called from 
any page, but I do not want to create an own engine to display the details 
of the "member of the week". 

Is there a standard or recommended way to do this?

Benjamin Papez