///////////////////////////////////////////////////////////////
// navigation
function fadeIn(myDiv,myOpacite) {
	var opacitefinal = 100;
	var vitesse = 1;
	var step = 1;
	var oldOpacite = parseInt(myOpacite);
	var newOpacite = parseInt(oldOpacite)+step;
	
	if (newOpacite < opacitefinal) { 
		setTimeout("fadeIn('"+myDiv+"','"+newOpacite+"')", vitesse);
		document.getElementById(myDiv).style.opacity = newOpacite/100;
		document.getElementById(myDiv).style.filter = "alpha(opacity:"+newOpacite+")";
	} else {
		clearTimeout(); 
		document.getElementById(myDiv).style.opacity = opacitefinal/100;
		document.getElementById(myDiv).style.filter = "alpha(opacity:opacitefinal)";
	}
}

function fadeOut(myDiv,myOpacite) {
	var opacitefinal = 0;
	var vitesse = 1;
	var step = 5;
	var oldOpacite = parseInt(myOpacite);
	var newOpacite = parseInt(oldOpacite)-step;
	
	if (newOpacite > opacitefinal) { 
		setTimeout("fadeOut('"+myDiv+"','"+newOpacite+"')", vitesse);
		document.getElementById(myDiv).style.opacity = newOpacite/100;
		document.getElementById(myDiv).style.filter = "alpha(opacity:"+newOpacite+")";
	} else {
		clearTimeout(); 
		document.getElementById(myDiv).style.display = "none";
	}
}

function showhide(myId){
	if ( document.getElementById(myId).style.display == "" || document.getElementById(myId).style.display == "none" ) { 
		document.getElementById(myId).style.display = "block";
	} else {
		hide(myId);
	}
}

///////////////////////////////////////////////////////////////
// composition dynamique de page en fonction de la hauteur des contenus
function compose() {
	var hauteurTete = document.getElementById("tete").offsetTop + document.getElementById("tete").offsetHeight;
	var hauteurMain =  document.getElementById("main").offsetHeight;
	document.getElementById("main").style.top = hauteurTete + "px";
	document.getElementById("pied").style.top = hauteurTete + hauteurMain + "px";
}

///////////////////////////////////////////////////////////////
// visiter PARIS
function show(myId){
	document.getElementById(myId).style.display = "block";
}

function hide(myId){
	document.getElementById(myId).style.display = "none";
}

function wo(theURL,winName,features) {
	features = features + "toolbar=no,status=no,resizable=yes,scrollbars=yes";
	window.open(theURL,winName,features);
}

////////////////////////////////////////////////////////////////
// menus
function showmenu(myId,myTheme){
	var complement = 0;
	if(document.all){ complement = 90; }
	document.getElementById(myId).style.display = "block";
	document.getElementById(myId).style.position = "absolute";
	document.getElementById(myId).style.left = document.getElementById(myTheme).offsetLeft + "px";
	document.getElementById(myId).style.top = document.getElementById('navigation1').offsetTop + document.getElementById(myTheme).offsetHeight - 10 + complement + "px";
}