var dp=new Array();
var tab= new Array();
var i;
var x=0;
for (i=0; i<25; i++){
tab[i]= "defile"+i;
dp[i]=x;
x+=90;
}
function DefilePhoto() {
for (i=0; i<25; i++){
dp[i]+=-1;//nombre de pixel pas deplacement
if(dp[i]==-90){dp[i]=2160;}
document.getElementById(tab[i]).style.left = dp[i]+"px";
}

}