// FONCTION SLIDE
function f_slide()
{
 timer = setInterval("f_change()", 3500);
}
// FONCTION CHANGE
function f_change()
{
 temp = document.getElementById('voiture').src;
 temp2 = temp.lastIndexOf('/');
 modele = temp.substr(temp2+1);
 temp2 = modele.lastIndexOf('_');
 modele = modele.substr(0, temp2);
 if (temp.indexOf('_1.jpg') != -1) nouveau = modele + '_2.jpg';
 else if (temp.indexOf('_2.jpg') != -1) nouveau = modele + '_3.jpg';
 else if (temp.indexOf('_3.jpg') != -1) nouveau = modele + '_1.jpg';
 document.getElementById('voiture').src = 'medias/' + nouveau;
}