function deplier(identifiant) {

	var elementMenuRelative = document.getElementById('menu_r'+identifiant);
	var elementMenuAbsolute = document.getElementById('menu_a'+identifiant);
	var classeMenuRelative = elementMenuRelative.className;
	var classeMenuAbsolute = elementMenuAbsolute.className;
	
	if (classeMenuRelative = 'cacher_relative') {
		
		elementMenuRelative.className = 'montrer_relative';
		elementMenuAbsolute.className = 'montrer';
	}
}

function replier(identifiant) {
	
	var elementMenuRelative = document.getElementById('menu_r'+identifiant);
	var elementMenuAbsolute = document.getElementById('menu_a'+identifiant);
	var classeMenuRelative = elementMenuRelative.className;
	var classeMenuAbsolute = elementMenuAbsolute.className;
	
	if (classeMenuRelative = 'montrer_relative') {
	
		elementMenuRelative.className = 'cacher_relative';
		elementMenuAbsolute.className = 'cacher';
	}
}