// JavaScript Document
var menu_selected;
var menu_s;

function highlightMenu(e){
	if(!e) e = window.event;
	if(e.type=='mouseover'){
		this.src = 'images/'+this.id+'_s.jpg';
	}else{
		this.src = 'images/'+this.id+'.jpg';
	}
}

function setMenuEvents(id_menu,id_selected){
	//подсвечиваем выделенный пункт меню
	menu_s = document.getElementById(id_selected);
	menu_s = document.getElementById(id_selected);
	if(menu_s) menu_s.src = 'images/'+menu_s.id+'_s.jpg';
	//события для подсветки меню
	var menuCont = document.getElementById(id_menu);
	menuCont = document.getElementById(id_menu);
	if(!menuCont) return;
	var menu = menuCont.getElementsByTagName('img');
	for(var i=0; i<menu.length; i++){
		if(menu[i].id==id_selected || menu[i].id=='') continue;
		menu[i].onmouseover = highlightMenu;
		menu[i].onmouseout = highlightMenu;
	}
}

//устанавливаем события
function setEvents(){
try{
	setMenuEvents('menu','menu_'+menu_selected);
	setMenuEvents('panel','-1');
	setMenuEvents('panel_1','-1');
}catch(err){ alert(err.message); }
}

if (typeof document.attachEvent!='undefined') window.attachEvent('onload',setEvents);
else window.addEventListener('load',setEvents,false);

function ifConfirm ()
{
	if (window.confirm ("Sind Sie, sicher, dass Sie Ihre Reservierung stornieren möchten?"))
		return true;
	else
		return false;
}

function submitLoginForm ()
{
	var a = document.forms['login'];
	if (a.username.value.length < 3 || a.password.value.length < 3)
	{
		alert ('Geben Sie Ihr Login und Passwort ein!');
		return false;
	}
	return true;
}

function requestAuthorization () {
	alert ('Bitte loggen Sie sich erst ein!');
}