function menu() {
	$('#nav_societe').fadeOut();
	$('#nav_competence').fadeOut();
	$('#nav_defiscalisation').fadeOut();
	$('#nav2').removeClass('selected');
	$('#nav4').removeClass('selected');
	if(this.id == 'nav2') {
		$('#nav2').addClass('selected');
		$('#nav_societe').fadeIn();
	}
	if(this.id == 'nav4') {
		$('#nav4').addClass('selected');
		$('#nav_competence').fadeIn();
	}
	if(this.id == 'opt'){
		$('#nav4').addClass('selected');
		$('#nav_competence').fadeIn();
	}
	if(this.id == 'def'){
		$('#nav4').addClass('selected');
		$('#nav_competence').fadeIn();
		$('#nav_defiscalisation').fadeIn();
	}
	if(this.id == 'pro'){
		$('#nav4').addClass('selected');
		$('#nav_competence').fadeIn();
	}
}
function menu2(){
	if(this.id == 'opt'){
		$('#nav4').addClass('selected');
		$('#nav_defiscalisation').fadeOut();
	}
	if(this.id == 'def'){
		$('#nav_defiscalisation').fadeIn();
	}
	if(this.id == 'pro'){
		$('#nav4').addClass('selected');
		$('#nav_defiscalisation').fadeOut();
	}
}
function init(){
	$('.mn').mouseover(menu);
	$('.sn').mouseover(menu2)
}
$(window).load(init);