// NAV
if(document.images){

// NAVIGATION SANDRINE GESTIN
bout_gestin1 = new Image; bout_gestin1.src = "images/img_gestin/gestin_bout1.jpg";
bout_gestin1on = new Image; bout_gestin1on.src = "images/img_gestin/gestin_bout1on.jpg";
bout_gestin2 = new Image; bout_gestin2.src = "images/img_gestin/gestin_bout2.jpg";
bout_gestin2on = new Image; bout_gestin2on.src = "images/img_gestin/gestin_bout2on.jpg";
bout_gestin3 = new Image; bout_gestin3.src = "images/img_gestin/gestin_bout3.jpg";
bout_gestin3on = new Image; bout_gestin3on.src = "images/img_gestin/gestin_bout3on.jpg";
bout_gestin4 = new Image; bout_gestin4.src = "images/img_gestin/gestin_bout4.jpg";
bout_gestin4on = new Image; bout_gestin4on.src = "images/img_gestin/gestin_bout4on.jpg";
bout_gestin5 = new Image; bout_gestin5.src = "images/img_gestin/gestin_bout5.jpg";
bout_gestin5on = new Image; bout_gestin5on.src = "images/img_gestin/gestin_bout5on.jpg";

}