var Menu = {
					mark: function(which, which_sm)
					{
						var el = document.getElementById('ul_menu').getElementsByTagName('li')[which-1];
						var tmp = el.getElementsByTagName('a')[0];
						if(tmp.className.indexOf('active') == -1) {
							tmp.className=tmp.className.replace('active', '');
							tmp.className += ' active';
						}
						
						var stack = document.getElementById('submenu').getElementsByTagName('ul');
						for (var i = 0; i < stack.length; i++) {
							stack[i].style.display = 'none';
						}
						
						if (document.getElementById('submenu_' + which)) {
							document.getElementById('submenu_' + which).style.display = 'block';
						}
						
						var el2 = document.getElementById('submenu_' + which).getElementsByTagName('li')[which_sm-1];
						tmp = el2.getElementsByTagName('a')[0];
						
						if(tmp.className.indexOf('active') == -1) {
							tmp.className=tmp.className.replace('active', '');
							tmp.className += ' active';
						}
					}
				}