function afficheMenu(id) {
	if(id >= 0)
		document.getElementById('menu_deroulant_'+id).style.display='block';
	$('#lien_'+(id+1)).addClass('actif');
	if(delay_hide) {
		if(cur_remove == id)
			window.clearTimeout(delay_hide);
		else efface();
	}
}

var delay_hide = null;
var cur_remove = null;
function cacheMenu(num) {
	if(delay_hide) {
		if(cur_remove != num)
			efface();
		window.clearTimeout(delay_hide);
	}
	document.getElementById('menu_deroulant_0').style.display='none';
	document.getElementById('menu_deroulant_1').style.display='none';
	document.getElementById('menu_deroulant_2').style.display='none';
	document.getElementById('menu_deroulant_3').style.display='none';
	delay_hide = window.setTimeout("efface", 50);
	cur_remove = num;
}

function efface() {
	$('#lien_'+(cur_remove+1)).removeClass('actif');
}