function positionEcran(el)	{
	var posX = el.offsetLeft;
	var posY = el.offsetTop;
	while (el.offsetParent)	{
		el = el.offsetParent;
		posX += el.offsetLeft;
		posY += el.offsetTop;
		if (el != document.body && el != document.documentElement) {
			posX -= el.scrollLeft;
			posX -= el.scrollTop;
		}
	}
	var tabPos = { x: posX, y: posY };
	return tabPos;
}
function montreImg(el) {
	img = el;
	img_src = img.src;
	divCont = document.getElementById('idDivImgCont');
	div = document.getElementById('idDivImg');
	if(document.body) {
		ecr_w = document.documentElement.clientWidth;
		ecr_h = document.documentElement.clientHeight;
	} else {
		ecr_w = (window.innerWidth);
		ecr_h = (window.innerHeight);		
	}
	
	new_img = new Image();
	new_img.src = img_src;
	
	if(window.pageYOffset) scrollY = window.pageYOffset;
	else scrollY = document.documentElement.scrollTop;
	
	if(scrollY == undefined) scrollY = 0;
	
	divW = new_img.width+18;
	divH = new_img.height+18;
	newPosX = Math.round((ecr_w - divW)/2);
	newPosY = Math.round(((ecr_h - divH)/2)+scrollY);	
	
	//alert("scrollY:"+scrollY+" newPosY:"+newPosY+" newPosX:"+newPosX+" ecr_h:"+ecr_h+" ecr_w:"+ecr_w);
	
	//tabPos = positionEcran(img);
	
	div.innerHTML = "<img src='"+img_src+"' style='float:left;' />";
	divCont.style.top = newPosY+"px";
	divCont.style.left = newPosX+"px";
	divCont.style.width = divW+"px";
	divCont.style.height = divH+"px";
	divCont.style.display = "block";
	
	//alert(new_img.width+" "+new_img.height+" "+divW+" "+divH);
}

function closeImg() {
	div = document.getElementById('idDivImgCont');
	div.style.display = "none";
}