Untitled

function preDiaporama()
{
	calque.style.zIndex = 1;
	calque.style.backgroundColor = "grey";
	imgcourante = parseInt(img2.src[img2.src.length-5]);
	delay = parseInt(refresh.value)*10;
	compteur = delay;
	diaporama();
}

function postDiaporama()
{
	calque.style.zIndex = -1;
	calque.style.backgroundColor = "transparent";
	calque.style.backgroundImage = "none";
}

function diaporama()
{
	var data = "";
	if (compteur == delay)
	{
		compteur = 0;
		data = (tabImages[imgcourante-1].split("#"))[0];
		calque.style.backgroundImage = "url('"+data+"')";
		imgcourante = parseInt(imgcourante)%5 +1
		window.setTimeout("diaporama()", 100);
	}
	else
	{
		if (Lastkeypressed == 27)
		{
			Lastkeypressed = 0;
			postDiaporama();
			return;
		}
		compteur = parseInt(compteur)+1;
		window.setTimeout("diaporama()", 100);
	}
}

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function escKey(event)
{
	if (event.keyCode == 27) Lastkeypressed = 27;
	if (event.keyCode == 37) defiler((parseInt(img1.src[img1.src.length-5])+3)%5+1);
	if (event.keyCode == 39) defiler(img2.src[img2.src.length-5]);
}

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<body onkeydown = "escKey(event)">