var myop=0;
var mytimer;
var coord = new Array();
var maxl=0;

function timer() {
    myop+=0.05;
    document.getElementById("id_gauche").style.opacity=myop;
    document.getElementById("id_gauche2").style.opacity=1-myop;
    if (myop<1) {
         mytimer=setTimeout("timer()",50);
   } else {
       document.gauche2.src=document.gauche.src;
   }
}

function agrandi(valeur) {
    document.gauche.src= "image/couverture/"+valeur+".jpg";
//    document.getElementById(valeur).opacity=1;
    document.getElementById("id_"+valeur).style.opacity=1;
    if (document.getElementById("idd_"+valeur)) {
        document.getElementById("idd_"+valeur).style.opacity=1;
    }
    myop=0;
    timer();
}

function reduit(valeur) {
//  window.clearTimeout(mytimer);
    document.getElementById("id_"+valeur).style.opacity=0.5;
    if (document.getElementById("idd_"+valeur)) {
        document.getElementById("idd_"+valeur).style.opacity=0.5;
    }
}

var myopdr=0;
var myvaleur;

function timerClick() {
    myopdr-=0.05;
    id_droit.style.opacity=myopdr;
    id_new.style.opacity=myopdr;
    if (myopdr>=0) {
         mytimer=setTimeout("timerClick()",50);
   } else {
        id_droit.style.opacity=0;
        document.location="html/"+myvaleur+".html"
   }
}

function droitApparait() {
    myopdr+=0.05;
    document.getElementById("id_droit").style.opacity=myopdr;
    document.getElementById("id_droit").style.filter='alpha(opacity=myopdr)';
    if (myopdr<=1) {
         mytimer=setTimeout("droitApparait()",50);
   } else {
        document.getElementById("id_droit").style.opacity=1;
   }
}

function myclick(valeur) {
    myopdr=1;
    myvaleur=valeur;
    timerClick();
}

var alpha=0.6;
var beta=0.1;



function tourne() {
    for (var l=0;l<maxl;l++) {
          var x=Math.cos(coord[l][1])*Math.sin(coord[l][2]);
          var y=Math.sin(coord[l][1])*Math.sin(coord[l][2]);
          var z=                      Math.cos(coord[l][2]);

          var xp=x;
          var yp=y*Math.cos(alpha)-z*Math.sin(alpha);
          var zp=y*Math.sin(alpha)+z*Math.cos(alpha);

          var xpp=xp*Math.cos(beta)-yp*Math.sin(beta);
          var ypp=xp*Math.sin(beta)+yp*Math.cos(beta);
          var zpp=zp;

        document.getElementById("id_"+coord[l][0]).style.left=250+(250*xpp)-65*(ypp+1)/2/2;
        document.getElementById("id_"+coord[l][0]).style.top =250+(250*zpp)-100*(ypp+1)/2/2; 
        document.getElementById(coord[l][0]).height          =     100*(ypp+1)/2; 
        document.getElementById(coord[l][0]).width           =      65*(ypp+1)/2; 
    }
    beta+=0.01;
    timerTourne=setTimeout("tourne()",100);
}

function aalpha() {
    alpha+=0.1;
}



function onloadDelay() {
    if (maxl==0) {
        setTimeout("onloadDelay()",50);
    } else {
        setTimeout("droitApparait()",50);
	timerTourne=setTimeout("tourne()",50);
    }
}
window.onload=onloadDelay();