logos = new Array("ss1", "ss2", "ss4");

if (page == "accueil")
{
	document.getElementById(logos[0]).style.visibility = "visible";
	
	first = 0;
	second = 1;	
	firstOpacity = 1;
	secondOpacity = 0;
	
	setTimeout("fadeLogos(" + first + "," + second + ")", 3000);
}

function fadeLogos(first,second) {
	doFade(first, 1, 0);
	doFade(second, 0, 1);
	document.getElementById(logos[second]).style.visibility = "visible";

	first = first + 1;
	if (first == logos.length) first = 0;
	second = second + 1;
	if (second == logos.length) second = 0;
	setTimeout("fadeLogos(" + first + "," + second + ")", 4000);
}

function doFade(logo, curOp, destOp)
{
	inc = 0.05;
	if (destOp < curOp) inc = -0.05;
	newOp = Math.round((curOp + inc)*100)/100;
	setOpacity(logo, newOp);

	if (newOp != destOp)
	{
		setTimeout("doFade(" + logo + ", " + newOp + ", " + destOp + ")", 80);
	}else {
		if (destOp == 0) document.getElementById(logos[logo]).style.visibility = "hidden";
	}
}

function setOpacity(logo, opacity)
{
	var object = document.getElementById(logos[logo]).style;
	if (ua == "mozilla") object.MozOpacity = opacity;
	else if (ua == "ie") object.filter = "Alpha(opacity="+opacity*100+")";
	else object.opacity = opacity;
}