function stop(){
play="false"; num_image=0;
demarre="false";
window.clearTimeout(timer)
}
function pause(){
if (demarre=="true"){
if (play=="false"){window.clearTimeout(timer);diapo();play="true"}
else{window.clearTimeout(timer);play="false"}}}

function diapo() {
demarre="true";
window.clearTimeout(timer);

if (!image_nom[num_image]){num_image=1;}
imght=image_id[num_image];
document.getElementById("laphoto").src=image_nom[num_image];
imgr=image_id[num_image];
imgb=image_id[num_image]-1;
//tfgr='LI'+imgr;
if(imgb==0){imgb=image_nom.length-1;}
//if (image_id[num_image]=1){migb=longueur;}
//alert('gb:'+imgb+' - gr:'+imgr);
document.getElementById(imgb).style.color="#000000";
document.getElementById(imgr).style.color="#CC0000";
document.getElementById('LI'+imgr).style.color="#CC0000";
document.getElementById('LI'+imgb).style.color="#000000";
play="true";
num_image+=1;
timer=window.setTimeout('diapo()',2000);
}
function charge(){

for (var i=1;i<image_nom.length;i++)
preload.src=image_nom[i];

}
var preload=new Image();
charge();


// donnera " 1 2 4 8 16"