function affiche(site){
	document.getElementById('filter').style.opacity = 0;
	document.getElementById('filter').style.display = "block";
	
	window.addEvent('domready', function(){
		var filter = document.getElementById('filter');
		var effet = new Fx.Morph(filter,{duration:300});
		effet.start({'opacity': [0,0.8]});
	});
	setTimeout(function(){
		document.getElementById('boiboite').style.display = "block";
		cache();
		document.getElementById(site).style.display  = "block";
						},500);
}

function fermer(){
	document.getElementById('boiboite').style.display = "none";
	window.addEvent('domready', function(){
		var filter = document.getElementById('filter');
		var effet = new Fx.Morph(filter,{duration:300});
		effet.start({'opacity': [0.8,0]});
	});
	
	setTimeout(function(){
		document.getElementById('filter').style.display = "none";
	},500);
}

function display(realisation){
	// on cache toutes les realisations
	cache();
	// on affiche la bonne
	document.getElementById(realisation).style.display = "block";
} 

function cache(){
	document.getElementById('malisse').style.display = "none";
	document.getElementById('vernet').style.display = "none";
	document.getElementById('mission').style.display = "none";
	document.getElementById('axpac').style.display = "none";
	document.getElementById('fie').style.display = "none";
	document.getElementById('vernetbis').style.display = "none";
}