var bouton = new Array(); 
bouton [0] = new Image(); 
bouton [0].src = 'images/boutons/acces-over-ot-beaumes-de-venise.jpg'; 
bouton [1] = new Image(); 
bouton [1].src = 'images/boutons/accueil-over-ot-beaumes-de-venise.jpg'; 
bouton [2] = new Image(); 
bouton [2].src = 'images/boutons/contact-over-ot-beaumes-de-venise.jpg'; 
bouton [3] = new Image(); 
bouton [3].src = 'images/boutons/recherche-over-ot-beaumes-de-venise.jpg'; 

function montre(id) {
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document.all[id].style.display="block";
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document.layers[id].display="block";
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}
function cache(id) {
if (document.getElementById) {
document.getElementById(id).style.display="none";
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document.all[id].style.display="none";
} else if (document.layers) {
document.layers[id].display="none";
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}

function menuderoulant(selection){
window.location=selection.options[selection.selectedIndex].value;
}