function preloadImages() {
	var d=document;
	if(d.images) {
		if(!d.MM_p) d.MM_p=new Array();
		var i,j=d.MM_p.length,a=preloadImages.arguments;
		for(i=0; i<a.length; i++)
			if (a[i].indexOf("#")!=0) {
				d.MM_p[j]=new Image;
				d.MM_p[j++].src=a[i];
			}
	}
}    

var aktmenu = 0;
var menuname = new Array('','citytour-menu','incentives-menu','incoming-menu');
function showmenu(id) {
	if (aktmenu) { document.getElementById(menuname[aktmenu]).style.display = "none";
		document.getElementById("image-"+menuname[aktmenu]).src = "images/menu-open.jpg";
	}
	if (aktmenu != id) {
		document.getElementById(menuname[id]).style.display = "block";
		document.getElementById("image-"+menuname[id]).src = "images/menu-close.jpg";
		aktmenu = id;
	} else {
		aktmenu = 0;
	}
}

function validateBooking() {
	var errors = 0;
	var fields = new Array('name','email', 'year', 'month', 'day'); 
	var names = new Array('Name','Email', 'Year', 'Month', 'Day');
      		
	for (i=0;i<fields.length;i++) {
		if (document.getElementById(fields[i]).value == "") {
			alert('Empty field: '+names[i]);
			errors++;
			i=fields.length;
		}
	}
      		
	if (!errors) {
		document.bookingform.submit();
	}
}
      	

function validateBooking2() {
	var errors = 0;
	var fields = new Array('name-a','email-a', 'year-a', 'month-a', 'day-a'); 
	var names = new Array('Name','Email', 'Year', 'Month', 'Day');
      		
	for (i=0;i<fields.length;i++) {
		if (document.getElementById(fields[i]).value == "") {
			alert('Empty field: '+names[i]);
			errors++;
			i=fields.length;
		}
	}
		
	if (!errors) {
		document.getElementById('bookingform2').submit();
	}
}

function startPage() {
	preloadImages();
}

function addEvent(obj, evType, fn) {
  if (obj.addEventListener) {
    obj.addEventListener(evType, fn, true);
    return true;
  } else if (obj.attachEvent) {
    var r = obj.attachEvent("on"+evType, fn);
    return r;
  } else {
    return false;
  }
}

addEvent(window, 'load', startPage);

function printPage() {
	if (window.print) {
		setTimeout('window.print();', 200);
	} else 
		if (agt.indexOf("mac") != -1) {
			alert("Az oldal nyomtatásához nyomd meg a 'Cmd+p' gombokat!");
		} else {
			alert("Az oldal nyomtatásához nyomd meg a 'Ctrl+p' gombokat!");
		}
}