function DeroulerPremisse() {
	var premisse = $('f1');
	var fxpremisse = new Fx.Styles(premisse, {duration:10000, wait:false});
	fxpremisse.start({'height': '0px'});
}

function DeroulerConclusion() {
	var conclusion = $('f2');
	var fxconclusion = new Fx.Styles(conclusion, {duration:10000, wait:false});
	fxconclusion.start({'height': '0px'});
}

window.addEvent('domready', function() {
	// déroulement barre du bas page d'accueil
	if ($chk($('nat'))) { 
		var barre_raymond = $('nat');
		var fx702p = new Fx.Styles(barre_raymond, {duration:50000, wait:false});
		//fx702p.options.transition = Fx.Transitions[transition][ease];
		fx702p.start({'width': '625px'});	
	}
	if ($chk($('f1'))) { 
		setTimeout("DeroulerPremisse()",1000);
	}
	if ($chk($('f2'))) { 
		setTimeout("DeroulerConclusion()",11000);
	}
	// fondu de la page
	var dem = $('contenu').setStyles({display:'block', opacity:0});
	new Fx.Style('contenu', 'opacity', {duration:1000}).start(1);
	
	var lien = $('navigation').getElements('a');
	
	lien.each(function(element) {
		var fx = new Fx.Styles('contenu', {duration:500, wait:true}, {transition: Fx.Transitions.Cubic.easeOut});
			element.addEvent('mousedown', function(){
				fx.start({
					opacity:0,
					'color': '#000'
				});
			});		
		});
});