/*function affNav(navOn) {
	$('nav-lavage').removeClassName('nav-on');
	$('nav-froid').removeClassName('nav-on');
	$('nav-cuisson').removeClassName('nav-on');
	$('nav-blog').removeClassName('nav-on');
	$('nav-innov').removeClassName('nav-on');
	$('nav-service').removeClassName('nav-on');

	$('nav-menu').childElements().each(function(e) {
		e.style.display = 'none';
	});
	
	
	$('nav-'+navOn).addClassName('nav-on');
	$('ul-'+navOn).style.display = 'block';
	Effect.BlindDown('ul-'+navOn, {duration:0.5});
}*/

function sousNav(){

	bodyClass = $$('body')[0].readAttribute('class');
	if(bodyClass.indexOf(' ')>=0) currentSection = bodyClass.substr(bodyClass.indexOf(' ')+ 1);
	else currentSection = '';
	currentSectionOn = null;
	$('nav').childElements().each(function(entete){
		var title = entete.identify()
		if(title.substr(4) == currentSection){
			entete.addClassName('nav-on');
			currentSectionOn = entete;
		}
		else{
			entete.observe('mouseover',function(){
				if(!entete.hasClassName('nav-on')) {
					entete.addClassName('nav-on');
					//new Effect.BlindDown(entete.childElements()[1], {duration:0.5});
				}
				if(currentSectionOn != null && currentSectionOn.hasClassName('nav-on')){
					currentSectionOn.removeClassName('nav-on');
				}
			});	
			entete.observe('mouseout',function(){
				if(entete.hasClassName('nav-on')) {
					entete.removeClassName('nav-on');
				}
				if(currentSectionOn != null &&  !currentSectionOn.hasClassName('nav-on')) {
					currentSectionOn.addClassName('nav-on');
				}
			});
		}
		
	});
	
}