function menu_down(a,b,c)
		{
			document.getElementById("menu_"+a+"lev"+b).style.top = c+"px" ;
		}
		
	var DayName = new Array(7)
	
	DayName[0] = "Niedziela"
	DayName[1] = "Poniedzialek"
	DayName[2] = "Wtorek"
	DayName[3] = "Środa"
	DayName[4] = "Czwartek"
	DayName[5] = "Piątek"
	DayName[6] = "Sobota"
	
	var MonthName = new Array(12)
	
	MonthName[0] = "Styczeń"
	MonthName[1] = "Luty"
	MonthName[2] = "Marzec"
	MonthName[3] = "Kwiecień"
	MonthName[4] = "Maj"
	MonthName[5] = "Czerwiec"
	MonthName[6] = "Lipiec"
	MonthName[7] = "Sierpień"
	MonthName[8] = "Wrzesień"
	MonthName[9] = "Październik"
	MonthName[10] = "Listopad"
	MonthName[11] = "Grudzień"
	
	function wyswietl_date()
		{
		var Today = new Date()
		var WeekDay = Today.getDay()
		var Month = Today.getMonth()
		var Day = Today.getDate()
		var Year = Today.getFullYear()
		
		if(Year <= 99) Year+= 1900
		
		return DayName[WeekDay] + ",<br />" + Day + " " + MonthName[Month] + " " + Year
		
		}
		
		
	function show(element)
		{
		document.getElementById(element).style.display ='block';
		}
	
	function hide(element)
		{
		document.getElementById(element).style.display ='none';
		}	
		
 	function waliduj() {
	
	var f = document.getElementById('mail');
	
	//Nadawca
	
	reg = /^[a-zA-ZąęćżźółńĄŻŹĆŃÓŁĘ\ ]{4,30}$/;
	wyn = f.nadawca.value.match(reg);
	
		if (wyn == null) {
			
			alert('Proszę podac Nadawce !!');
			return false;
			}
	
	
	//e-mail
	
	reg = /^[a-zA-Z0-9\.\-]{1,30}@[a-zA-Z0-9]+(\.[a-zA-Z0-9]+)+$/;
	wyn = f.mail_nadawca.value.match(reg);
		
		if (wyn == null) {
				alert('Proszę podać prawidłowy adres e-mail !!');
				return false				
			}
			
	//tytul_maila
	
	
	reg = /^[a-zA-ZąęćżźółńĄŻŹĆŃÓŁĘ\-\ ]{2,20}$/;
	wyn = f.tytul_maila.value.match(reg);
	
		if (wyn == null) {
			
			alert('Proszę podać tytuł maila !!');
			return false;
			}			
			
	//tresc maila
	
	reg = /^[a-zA-ZąęćżźółńĄŻŹĆŃÓŁĘ\-\ ]{2,2000}$/;
	wyn = f.tresc_maila.value.match(reg);
	
		if (wyn == null) {
			
			alert('Proszę wpisać tresć wiadomosci !!');
			return false;
			}			 
			
	return true;	
		
	}
	
	//
// Configuration
//

// If you would like to use a loading image, point to it in the next line, otherwise leave as-is.
var loadingImage = '../img/loading.gif';





//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll)
	return arrayPageScroll;
}



//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
//
function getPageSize(){

	var xScroll, yScroll;

	if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}

	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}

	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else {
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}


	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight)
	return arrayPageSize;
}

//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis) {
	var now = new Date();
	var exitTime = now.getTime() + numberMillis;
	while (true) {
		now = new Date();
		if (now.getTime() > exitTime)
			return;
	}
}





//
// showLightbox()
// Preloads images. Pleaces new image in lightbox then centers and displays.
//
function showLightbox(objLink)
{
	// prep objects
	var objOverlay = document.getElementById('overlay');
	var objLightbox = document.getElementById('lightbox');
	var objImage = document.getElementById('lightboxImage');
	var objLoadingImage = document.getElementById('loadingImage');

	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// center loadingImage if it exists
	if (objLoadingImage) {
		objLoadingImage.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - objLoadingImage.height) / 2) + 'px');
		objLoadingImage.style.left = (((arrayPageSize[0] - 40 - objLoadingImage.width) / 2) + 'px');
	}

	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';

	// preload image
	imgPreload = new Image();

	imgPreload.onload=function(){
		objImage.src = objLink.href;

		// center lightbox
		objLightbox.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2) + 'px');
		objLightbox.style.left = (((arrayPageSize[0] - 40 - imgPreload.width) / 2) + 'px');

		// A small pause between the image loading and displaying is required with IE,
		// this prevents the previous image displaying for a short burst causing flicker.
		if (navigator.appVersion.indexOf("MSIE")!=-1){
			pause(250);
		}

		objLightbox.style.display = 'block';

		return false;
	}

	imgPreload.src = objLink.href;

}


function flashLightbox(imgURL)
{
	// prep objects
	var objOverlay = document.getElementById('overlay');
	var objLightbox = document.getElementById('lightbox');
	var objImage = document.getElementById('lightboxImage');
	var objLoadingImage = document.getElementById('loadingImage');

	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// center loadingImage if it exists
	if (objLoadingImage) {
		objLoadingImage.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - objLoadingImage.height) / 2) + 'px');
		objLoadingImage.style.left = (((arrayPageSize[0] - 40 - objLoadingImage.width) / 2) + 'px');
	}

	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';

	// preload image
	imgPreload = new Image();

	imgPreload.onload=function(){
		objImage.src = imgURL;

		// center lightbox
		objLightbox.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2) + 'px');
		objLightbox.style.left = (((arrayPageSize[0] - 40 - imgPreload.width) / 2) + 'px');

		// A small pause between the image loading and displaying is required with IE,
		// this prevents the previous image displaying for a short burst causing flicker.
		if (navigator.appVersion.indexOf("MSIE")!=-1){
			pause(250);
		}

		objLightbox.style.display = 'block';

		return false;
	}

	imgPreload.src = imgURL;
}




//
// hideLightbox()
//
function hideLightbox()
{
	// get objects
	objOverlay = document.getElementById('overlay');
	objLightbox = document.getElementById('lightbox');

	// hide lightbox and overlay
	objOverlay.style.display = 'none';
	objLightbox.style.display = 'none';
}




//
// initLightbox()
// Function runs on window load, going through link tags looking for rel="lightbox".
// These links receive onclick events that enable the lightbox display for their targets.
// The function also inserts html markup at the top of the page which will be used as a
// container for the overlay pattern and the inline image.
//
function initLightbox()
{

	if (!document.getElementsByTagName){ return; }
	var anchors = document.getElementsByTagName("a");

	// loop through all anchor tags
	for (var i=0; i<anchors.length; i++){
		var anchor = anchors[i];

		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "lightbox")){
			anchor.onclick = function () {showLightbox(this); return false;}
		}
	}

	// the rest of this code inserts html at the top of the page that looks like this:
	//
	// <div id="overlay"><a href="#" onclick="hideLightbox(); return false;"><img id="loadingImage" /></a></div>
	// <div id="lightbox">
	//		<a href="#" onclick="hideLightbox(); return false;"><img /></a>
	// </div>

	var objBody = document.getElementsByTagName("body").item(0);

	// create overlay div and hardcode some functional styles (aesthetic styles are in CSS file)
	var objOverlay = document.createElement("div");
	objOverlay.setAttribute('id','overlay');
	objOverlay.style.display = 'none';
	objOverlay.style.position = 'absolute';
	objOverlay.style.top = '0';
	objOverlay.style.left = '0';
	objOverlay.style.zIndex = '90';
 	objOverlay.style.width = '100%';
	objBody.insertBefore(objOverlay, objBody.firstChild);

	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// preload and create loader image
	var imgPreloader = new Image();

	// if loader image found, create link to hide lightbox and create loadingimage
	imgPreloader.onload=function(){

		var objLoadingImageLink = document.createElement("a");
		objLoadingImageLink.setAttribute('href','#');
		objLoadingImageLink.onclick = function () {hideLightbox(); return false;}
		objOverlay.appendChild(objLoadingImageLink);

		var objLoadingImage = document.createElement("img");
		objLoadingImage.src = loadingImage;
		objLoadingImage.setAttribute('id','loadingImage');
		objLoadingImage.style.position = 'absolute';
		objLoadingImage.style.zIndex = '1150';
		objLoadingImageLink.appendChild(objLoadingImage);

		imgPreloader.onload=function(){};	//	clear onLoad, as IE will flip out w/animated gifs

		return false;
	}

	imgPreloader.src = loadingImage;

	// create lightbox div, same note about styles as above
	var objLightbox = document.createElement("div");
	objLightbox.setAttribute('id','lightbox');
	objLightbox.style.display = 'none';
	objLightbox.style.position = 'absolute';
	objLightbox.style.zIndex = '100';
	objBody.insertBefore(objLightbox, objOverlay.nextSibling);

	// create link
	var objLink = document.createElement("a");
	objLink.setAttribute('class','img');
	objLink.setAttribute('href','#');
	objLink.onclick = function () {hideLightbox(); return false;}
	objLightbox.appendChild(objLink);

	// create image
	var objImage = document.createElement("img");
	objImage.setAttribute('id','lightboxImage');
	objLink.appendChild(objImage);
}




//
// addLoadEvent()
// Adds event to window.onload without overwriting currently assigned onload functions.
// Function found at Simon Willison's weblog - http://simon.incutio.com/
//
function addLoadEvent(func)
{
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}

}




addLoadEvent(initLightbox);	// run initLightbox onLoad