// Animation 360°
var pos = new Array(0, 136, 295, 478, 679, 892, 1117 , 1363, 1611, 1849,
						  2052, 2231, 2387, 2516, 2632, 2754, 2908, 3075, 3284,
						  3513, 3755, 3998, 4220, 4409, 4557, 4667, 4783, 4940); // dernière valeur = largeur de l'image
var tete = new Array(80, 235, 419, 620, 812, 1008, 1222 , 1457, 1693, 1926,
						  2130, 2291, 2443, 2574, 2679, 2801, 2955, 3153, 3374,
						  3616, 3859, 4094, 4307, 4482, 4610, 4727, 4875); // dernière valeur = largeur de l'image
var cpt = 1;
var timer;
function anim() {
	var e = document.getElementById('fond');
	var x = pos[cpt];
	var ptx = tete[cpt] - x;
	var left = 150 - ptx;
	var w = pos[cpt+1] - x;
	e.style.width = w + "px";
	e.style.left = left + "px";
	e.style.backgroundPosition = "-" + x + "px 0";
	//document.getElementById('debug').innerHTML = cpt + " " + x + " " + w;
	cpt = cpt + 1;
	if(cpt==pos.length-1) clearInterval(timer);
	//cpt %= (pos.length-1);
}
function start() {
	timer = setInterval(anim, 100);
}