img21_on = new Image();

img21_on.src = "images/droits_over.gif";

img21_off = new Image();

img21_off.src = "images/droits_off.gif";



img22_on = new Image();

img22_on.src = "images/onu_over.gif";

img22_off = new Image();

img22_off.src = "images/onu_off.gif";



img23_on = new Image();

img23_on.src = "images/keywords_over.gif";

img23_off = new Image();

img23_off.src = "images/keywords_off.gif";


img24_on = new Image();

img24_on.src = "images/who_over.gif";

img24_off = new Image();

img24_off.src = "images/who_off.gif";



img25_on = new Image();

img25_on.src = "images/bibliographie_over.gif";

img25_off = new Image();

img25_off.src = "images/bibliographie_off.gif";



img26_on = new Image();

img26_on.src = "images/liens_over.gif";

img26_off = new Image();

img26_off.src = "images/liens_off.gif";