jquerytools & overlay (ajax)

jquerytools & overlay (ajax)

Hello, sorry for my poor english...

i'm using jquerytools and overlay.
I have a page call overlay width :

<a href="javascript:void(0);" rel="#fiche" class="individu">...
$("a[rel]").overlay({
        mask: '#676158',
        oneInstance: true  
});

when people click on line with "class individu", i show identity of this person. 
I read width ajax the identity of this person, and i show all on overlay part.
All is ok there.

in another part of this page, i use ajax to add new lines, same of before (<a href="...). But, at this time, when people click on, mask don't come. The ajax call is ok, but nothing appears.
How to do to call overlay system ?

thank's for all.
yonnel