window.onload = displayPics, moveLayer;

function displayPics()
{
	var photos = document.getElementById('contenu');
	var liens = photos.getElementsByTagName('a');
	var zoom = document.getElementById('zoom');
	var titre_photo = document.getElementById('photo').getElementsByTagName('dd')[0];
	var dim_photo = document.getElementById('photo').getElementsByTagName('dd')[1];
	var re = /(.+)[+](.+)/;
	
	for (var i = 0 ; i < liens.length ; ++i) { 
		liens[i].onclick = function() {
			zoom.src = this.href;
			chaine = this.title.split(re);
			re.exec(chaine);		
			titre_photo.firstChild.nodeValue = RegExp.$1;
			dim_photo.firstChild.nodeValue = RegExp.$2;
			return false;
		};
	}
}

var Timer=null;
var Pas = 4;
function moveLayer(Sens) {
	var Objet=document.getElementById("contenu");
    if(parseInt(Objet.style.left) + (Pas*Sens)>0)  {
		clearTimeout(Timer);
	}
	else if(parseInt(Objet.style.left) + (Pas*Sens)<-(Objet.offsetWidth-document.getElementById("support").offsetWidth)) {
		clearTimeout(Timer);
	}
    else {
        Objet.style.left = (parseInt(Objet.style.left) + (Pas*Sens)) + "px";
	}
	Timer = setTimeout("moveLayer(" + Sens + ");", 30);
}