window.onload = function(){
	kenBurn();
}

var leftDuMasque = 240;//position gauche du masque des photos
var topDuMasque = 110;//position top du masque des photos
var widthDuMasque = 140;//largeur du masque
var heightDuMasque = 380;//hauteur du masque
var safetyMargin = 10;//marge de securite
var pas = 1;
var vitesse = 120;
var myImage;
var leftFinImage;
var topFinImage;
var widthImage;
var heightImage;
var ratio;
var nl;
var nt;
var n = 0;
var monImage;

function kenBurn(){
	myImage = document.getElementById("ken-burn");
	if(n == 0){
		monImage = new Image();
		monImage.src = "images/diaporama/" + photos[0];
		myImage.src = monImage.src
	}
	widthImage = monImage.width;
	heightImage = monImage.height; 
	ratio = widthImage/heightImage;
	
	//alert("src= "+myImage.src+"  largeur = "+widthImage+"  hauteur = "+heightImage)
	
	var leftDepartImage = leftDuMasque - safetyMargin;
	var topDepartImage = topDuMasque + heightDuMasque + safetyMargin - heightImage;

	leftFinImage = leftDuMasque - ((widthImage - widthDuMasque) / 2);
	topFinImage = topDuMasque - ((heightImage - heightDuMasque) / 2);

	myImage.style.left = leftDepartImage + "px";
	myImage.style.top = topDepartImage + "px";
	bouge();
}

function bouge(){
	nl = parseInt(myImage.style.left) - pas
	nt = parseInt(myImage.style.top) + (pas/2)
	myImage.style.left = nl + "px";
	myImage.style.top = nt + "px";
	 
	if((nl <= leftFinImage)||(nt >= topFinImage)){
		if(n < photos.length - 1){ 
			n++;

		}else{
			n = 0;
		}
		monImage = new Image();
		monImage.src = "images/diaporama/" + photos[n];
		myImage.src = monImage.src;
		kenBurn();
		
	}else if((nl > leftFinImage)&&(nt < topFinImage)){
		var t = setTimeout("bouge()",vitesse);
	}
	
}

//plan*********************************************
function zoom(arg){

	var carte = document.getElementById("carte").src;

	var newCarte = carte;
	var numslash = carte.split("/");
	var nums = numslash[numslash.length-1].split(".");
	var num = eval(nums[1]);

	if((arg == 'moins') && (num > 1)){
		newCarte = "images/carte." + eval(num-1) + ".jpg";
	}
	if((arg == 'plus') && (num < 3)){
		newCarte = "images/carte." + eval(num+1) + ".jpg";
	}

	document.getElementById("carte").src = newCarte;
}