var visuel_n=0;
function Visuel_Fondu()
{
	if(document.all)
	{
		if ( window.opera )
			document.getElementById("visuel_" + VisuelPosChange).style.opacity = visuel_n*0.01;
		else
			document.getElementById("visuel_" + VisuelPosChange).filters.alpha.opacity=visuel_n;
		visuel_n+=5;
		if ( visuel_n<= 100 )
		{
			setTimeout("Visuel_Fondu()", 100);
			return 0;
		}
	}
	else
	{
		document.getElementById("visuel_" + VisuelPosChange).style.setProperty("-moz-opacity", visuel_n, "");
		visuel_n+=0.05;
		if ( visuel_n<= 1 )
		{
			setTimeout("Visuel_Fondu()", 100);
			return 0;
		}
	}
	visuel_n=0;
	document.getElementById("visuel").style.background="url('" + VisuelTab[VisuelPosChange][0] + "') ";
	setTimeout("Visuel_Clear()", 100); //supprime clignotement sous FF
	//document.getElementById("visuel").innerHTML="";
	//setTimeout("Visuel_Defil()", 4000);
}
function Visuel_Clear()
{
	document.getElementById("visuel").innerHTML="";
	setTimeout("Visuel_Defil()", 4000);
}

var VisuelTab = [
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_01.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_02.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_03.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_04.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_05.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_06.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_07.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_08.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_09.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_10.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_11.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_12.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_13.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_14.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_15.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_16.jpg",0],
	["http://start1g.ovh.net/~blenderd/lecture_ouverte/themes/black-blender/gal_17.jpg",0],
];
var VisuelPos=-1;
var VisuelPosChange;
function Visuel_Defil()
{
	VisuelPosChange=VisuelPos;	
	VisuelPos++;
	if ( VisuelTab.length <= VisuelPos )
		VisuelPos=0;
		
	if ( VisuelTab[VisuelPosChange][1] == 1 )
		document.getElementById("visuel").innerHTML+="<img src='" + VisuelTab[VisuelPosChange][0] + "' id='visuel_" + VisuelPosChange + "' style='filter:alpha(opacity=0); -moz-opacity:0; position: center; margin-left: 0px;' />";
	else
	{
		setTimeout("Visuel_Defil()", 17);
		return 0;
	}
	Visuel_Fondu();
} 
var LoadVisuelPos=0;
LoadVisuel();
function LoadVisuel() {
	var VisuelUrl;
	if ( VisuelTab[LoadVisuelPos][1] == 0 )
		VisuelUrl=VisuelTab[LoadVisuelPos][0];
	else if ( VisuelTab[VisuelTab.length-1][1] < 1 )
	{
		LoadVisuelPos++;
		if ( VisuelTab.length <= LoadVisuelPos )
			LoadVisuelPos=0;		
		setTimeout("LoadVisuel()", 17);		
		return 0;
	}
	else
		return 0;
		
	if (window.XMLHttpRequest)
		req = new XMLHttpRequest();
	else if (window.ActiveXObject)
		req = new ActiveXObject("Microsoft.XMLHTTP");
	if (req) {
		req.onreadystatechange = function() { JsIsLoading(LoadVisuelPos); };
		req.open("GET", VisuelUrl, true);
		req.send(null);
	}
}	
function JsIsLoading(LoadVisuelPos_) {
	if (req.readyState == 4) {
		if (req.status == 200 || req.status == 304)
		{
			VisuelTab[LoadVisuelPos_][1]++;
			if ( VisuelPos==-1 )
			{
				VisuelPos=0;
				Visuel_Defil();
			}
		}
		LoadVisuelPos++;
		if ( VisuelTab.length <= LoadVisuelPos )
			LoadVisuelPos=0;
		setTimeout("LoadVisuel()", 16);
	}
}