function over_1(){document.images["rollOver_1"].src="../ima/index/contact_o.gif"}
function out_1(){document.images["rollOver_1"].src="../ima/index/contact_gn.gif"}

function over_2(){document.images["rollOver_2"].src="../ima/index/autoportrait_o.gif"}
function out_2(){document.images["rollOver_2"].src="../ima/index/autoportrait_g.gif"}

function over_3(){document.images["rollOver_3"].src="../ima/index/pub_o.gif"}
function out_3(){document.images["rollOver_3"].src="../ima/index/pub_g.gif"}

function over_4(){document.images["rollOver_4"].src="../ima/index/alim_o.gif"}
function out_4(){document.images["rollOver_4"].src="../ima/index/alim_g.gif"}

function over_5(){document.images["rollOver_5"].src="../ima/index/portrait_pub_o.gif"}
function out_5(){document.images["rollOver_5"].src="../ima/index/portrait_pub_g.gif"}

function over_6(){document.images["rollOver_6"].src="../ima/index/portrait_ent_o.gif"}
function out_6(){document.images["rollOver_6"].src="../ima/index/portrait_ent_g.gif"}

function over_7(){document.images["rollOver_7"].src="../ima/index/matiere_o.gif"}
function out_7(){document.images["rollOver_7"].src="../ima/index/matiere_g.gif"}

function over_8(){document.images["rollOver_8"].src="../ima/index/bijou_o.gif"}
function out_8(){document.images["rollOver_8"].src="../ima/index/bijou_g.gif"}

function over_9(){document.images["rollOver_9"].src="../ima/index/medical_o.gif"}
function out_9(){document.images["rollOver_9"].src="../ima/index/medical_g.gif"}

function over_10(){document.images["rollOver_10"].src="../ima/index/vehicule_o.gif"}
function out_10(){document.images["rollOver_10"].src="../ima/index/vehicule_g.gif"}

function over_11(){document.images["rollOver_11"].src="../ima/index/galerie_o.gif"}
function out_11(){document.images["rollOver_11"].src="../ima/index/galerie_g.gif"}

function over_12(){document.images["rollOver_12"].src="../ima/index/tourisme_o.gif"}
function out_12(){document.images["rollOver_12"].src="../ima/index/tourisme_g.gif"}

function over_13(){document.images["rollOver_13"].src="../ima/index/reportage_o.gif"}
function out_13(){document.images["rollOver_13"].src="../ima/index/reportage_g.gif"}

function over_14(){document.images["rollOver_14"].src="../ima/index/conference_o.gif"}
function out_14(){document.images["rollOver_14"].src="../ima/index/conference_g.gif"}

function over_15(){document.images["rollOver_15"].src="../ima/index/nature_o.gif"}
function out_15(){document.images["rollOver_15"].src="../ima/index/nature_g.gif"}