Thanks for your help
i don't have permission to update this post..
i read the post about the flexslider but now the file is
jquery.flexslider.js and i don't where i must change the code
thx for your anstwers in the same time i find a solution
how order the post in category archive for example in this page i want a alphabetic order
http://www.zicactu.com/categorie/bio/biographie-pop/
Thanks for you're no support !
it's very easy to add custom in wordpress, but it's not easy to find where you make some modification !
it's easy to say
put this ligne in 2033 in this file...
or
replace this ligne in 2033...