function fadeout(num_actu,opacity){
	var actu = "actu_"+num_actu;
	var op = opacity/100;
	if(document.all){
		document.getElementById(actu).filters.alpha.opacity=opacity;
	}
	else{
		document.getElementById(actu).style.opacity=op;	
		document.getElementById(actu).style.MozOpacity=op;		
	}
	opacity--;
	if(opacity>0) setTimeout("fadeout('"+num_actu+"','"+opacity+"')", 2);
	else{
		document.getElementById(actu).style.display="none";
		num_actu++;
		setTimeout("fade_actu('"+num_actu+"')", 600);
	}
}
	
function fadein(num_actu,opacity){
	var actu = "actu_"+num_actu;
	var op = opacity/100;
	if(document.all){
		//document.getElementById(actu).filters.alpha.opacity=opacity;
	}
	else{
		document.getElementById(actu).style.opacity=op;
		document.getElementById(actu).style.MozOpacity=op;
	}
	opacity++;
	if(opacity<101) setTimeout("fadein('"+num_actu+"','"+opacity+"')", 2);
	else setTimeout("fadeout('"+num_actu+"','"+opacity+"')", 3000);
}
	
function fade_actu(num_actu){
	
	if(document.getElementById("actu_"+num_actu)){
		document.getElementById("actu_0").style.display="none";
		document.getElementById("actu_"+num_actu).style.display="block";			
	}
	else{
		num_actu=1;
		document.getElementById("actu_"+num_actu).style.display="block";
	}
	
	actu = "actu_"+num_actu;
	document.getElementById(actu).style.opacity="0";
	fadein(num_actu,0);
}