var idx_diapo=0;
var Nb_diapo=new Array(3,7,3); // nombre total de diapo pour chaque gîte
var idZoneSurvol=0; // index de la zone des images défilantes
var IntervalDiapo=1500; // en millisecondes
var IntervalDiapoMin=300;
var ImgDir="squelettes/illustrations/";
var LangDir="fr/";
var DiapoDir=ImgDir+LangDir;
var PrefixPhotoName="home";
var PrefixId="home";

setInterval("diaporama()",IntervalDiapo);	

function foreground(obj,id){
	var zone;
	var status1=new Array("hidden","hidden","visible","hidden");
	var status2=new Array("hidden","visible","hidden","visible");
	
	idZoneSurvol = id;
	for(var i=1; i<= 3 ; i++) {
		for(var j=1 ; j<=4 ;j++) {
			if (zone=document.getElementById(PrefixId+i+j)) {		
				if (i==id) {	
					zone.style.visibility = status2[j-1];
					zone.style.zIndex = 5;
				}
				else {
					zone.style.visibility = status1[j-1];
					zone.style.zIndex = 0;
				}
			}
		}
	}
	
}

function diaporama() {
	var zone;
	if (idZoneSurvol!=0) {
		idx_diapo++;
		idx_diapo = idx_diapo % Nb_diapo[idZoneSurvol-1];
		if (zone=document.getElementById(PrefixId+idZoneSurvol+'2'))
			zone.src=DiapoDir+PrefixPhotoName+idZoneSurvol+'2'+idx_diapo+".png";
	}	
}

function background()
{
	idZoneSurvol=0;	
	clearInterval();
	ImgDefault();
}

function ImgDefault()
{
	var zone;
	var status1=new Array("visible","hidden","hidden","hidden");
	for(var i=1;i<=3;i++) {
		for(var j=1;j<=4;j++) {
			if (zone=document.getElementById(PrefixId+i+j)) {
				zone.style.visibility = status1[j-1];
				zone.style.zIndex = i-1;
			}		
		}
	}	
}