if (document.images) {
     button1 = new Image
     button2 = new Image

     button1.src = 'images/btn_soumission_a.jpg'
     button2.src = 'images/btn_soumission_b.jpg'
 }
 
 if (document.images) {
     button3 = new Image
     button4 = new Image

     button3.src = 'images/btn_catalogue_a.jpg'
     button4.src = 'images/btn_catalogue_b.jpg'
 }
 
  if (document.images) {
     button5 = new Image
     button6 = new Image

     button5.src = 'images/btn_conditions_a.jpg'
     button6.src = 'images/btn_conditions_b.jpg'
 }
 
 if (document.images) {
     button7 = new Image
     button8 = new Image

     button7.src = 'images/btn_nousengageons_a.jpg'
     button8.src = 'images/btn_nousengageons_b.jpg'
 }
 
 if (document.images) {
     button9 = new Image
     button10 = new Image

     button9.src = 'images/btn_contacteznous_a.jpg'
     button10.src = 'images/btn_contacteznous_b.jpg'
 }
 
  if (document.images) {
     button11 = new Image
     button12 = new Image

     button11.src = 'images/btn_parcactivites_a.jpg'
     button12.src = 'images/btn_parcactivites_b.jpg'
 }
 
  if (document.images) {
     button13 = new Image
     button14 = new Image

     button13.src = 'images/btn_jeuxgeant_a.jpg'
     button14.src = 'images/btn_jeuxgeant_b.jpg'
 }
 
   if (document.images) {
     button15 = new Image
     button16 = new Image

     button15.src = 'images/btn_spectmusique_a.jpg'
     button16.src = 'images/btn_spectmusique_b.jpg'
 }
 
  if (document.images) {
     button17 = new Image
     button18 = new Image

     button17.src = 'images/btn_activitespeciales_a.jpg'
     button18.src = 'images/btn_activitespeciales_b.jpg'
 }
   
   if (document.images) {
     button19 = new Image
     button20 = new Image

     button19.src = 'images/btn_amuseurpublic_a.jpg'
     button20.src = 'images/btn_amuseurpublic_b.jpg'
 }

 if (document.images) {
     button21 = new Image
     button22 = new Image

     button21.src = 'images/btn_noel_a.jpg'
     button22.src = 'images/btn_noel_b.jpg'
 }

if (document.images) {
     button23 = new Image
     button24 = new Image

     button23.src = 'images/btn_thematique_a.jpg'
     button24.src = 'images/btn_thematique_b.jpg'
 }


if (document.images) {
     button25 = new Image
     button26 = new Image

     button25.src = 'images/btn_charsalleg_a.jpg'
     button26.src = 'images/btn_charsalleg_b.jpg'
 }
 
 if (document.images) {
     button27 = new Image
     button28 = new Image

     button27.src = 'images/btn_equiappoint_a.jpg'
     button28.src = 'images/btn_equiappoint_b.jpg'
 }