window.addEvent('domready', function() {
	if (part == 'accueil'
	 || part == 'markets'
	 || part == 'products') {
		function show_menu(li) {
			li.getElement('ul.hide').set('styles', {'display': 'block'});
		}
		function hide_menu() {
			$('ss_menu').getElements('ul.hide').set('styles', {'display': 'none'});
		}
		hide_menu();
		//on met un evenement onrollover & onrollout sur toutes les li du sous menu
		$('ss_menu').getElements('li.roll').addEvent('mouseover', function(){show_menu(this);});
		$('ss_menu').getElements('li.roll').addEvent('mouseout', function(){hide_menu();});
	}
});