var cosinus=new Array();
var sinus=new Array();
for (var i = 0; i < 360; i++) {
sinus[i]=Math.sin((2*Math.PI)*i/360);
cosinus[i]=Math.cos((2*Math.PI)*i/360)}
var nbobj=8;
var vitesse=10;
var dalpha=new Array();
var posx=new Array();
var posy=new Array();
var alpha=new Array();
var rayon=100;
var xcenter=365;
var ycenter=100;
var ns;
var ie;
var large;
var haut;
if (navigator.appName=="Microsoft Internet Explorer") {
ns = false; ie = true;}
else{
ns = true; ie = false;}
for (var i = 0; i<nbobj; i++) {
alpha[i]=Math.round(360/(nbobj-1))*i;
posx[i]=xcenter+rayon*cosinus[alpha[i]];
posy[i]=ycenter+rayon*sinus[alpha[i]];
dalpha[i]=1;
}

function CreerLay(nom,x,y,haut,larg,visible,zindex,contenu,special) {
if (nom=="terre") {
xcenter=x+34; ycenter=y+34;
}
//if (ie) {
if (visible==1) {visi="visible;"} 
else {visi="hidden;"};
chaine='\n<div style="position:absolute;width:'+haut+'px;height:'+larg+'px;top:'+y+'px;left:'+x+'px;visibility:'+visi+'z-index:'+zindex+';" ID="'+nom+'" '+special+'>'+contenu+'</div>';
//}
//else {
//if (visible==1) {visi="show"} 
//else {visi="hidden"};
//chaine='\n<layer width='+haut+' height='+larg+' top='+y+' left='+x+' z-index='+zindex+' visibility='+visi+' NAME="'+nom+'" '+special+'>'+contenu+'</LAYER>';}
document.write(chaine);
}

function anime() {
for (var i=0; i<nbobj; i++) {
alpha[i]+=dalpha[i];
if (alpha[i]>359) {alpha[i]-=360;}
posx[i]=xcenter+rayon*cosinus[alpha[i]];
posy[i]=ycenter+rayon*sinus[alpha[i]];
objetX="objet"+i
PlacerObj (objetX,posx[i],posy[i]);
}
tempo=setTimeout("anime()",vitesse);
}

function PlacerObj(nom,x,y) {
//if (ie) {
document.all.item(nom).style.top = y; document.all.item(nom).style.left=x;
//}
//else {document.layers[nom].top = y; document.layers[nom].left = x;}
}