function addEvent(obj, type, fn)
{
	if (obj.addEventListener) {
		obj.addEventListener(type, fn, false);
	}
	else if (obj.attachEvent) {
		obj['e'+type+fn] = fn;
		obj[type+fn] = function() { obj['e'+type+fn](window.event); }
		obj.attachEvent('on'+type, obj[type+fn]);
	}
}


function submitForm ()
{
	var inputs = this.getElementsByTagName('input');
	for (i=0; i<inputs.length; i++) {
		if (inputs[i].type == 'text' && inputs[i].value == inputs[i].defaultValue) {
			inputs[i].focus();
			return false;
		}
	}
	return true;
}


function initForm (formName)
{
	var form   = document.forms[formName];
	var inputs = form.getElementsByTagName('input');
	for (i=0; i<inputs.length; i++) {
		if (inputs[i].type == 'text') {
			inputs[i].onfocus = function () { if (this.value == this.defaultValue) this.value = ''; }
			inputs[i].onblur  = function () { if (this.value == '') this.value = this.defaultValue; }
		}
	}

	form.onsubmit = submitForm;
}


function setHome (el, url)
{
	el.style.behavior='url(#default#homepage)';
	el.setHomePage(url);
}


function addToFavs (url, title)
{
	if (window.sidebar) {
		window.sidebar.addPanel(title, url, '');
	} 
	else if (window.external) {
	  window.external.AddFavorite(url, title);
	}
	else if (window.opera && window.print) {
		return true;
	}
}


var msgZoomIn;
var msgZoomOut;
var inProgress = false;

function mapZoom (nr)
{
	if (isNaN(nr) || nr < 0 || nr > images.length) {
		nr = 0;
	}
	html  = '<map name="map1">';
	if (nr <  images.length) {
		html += '<area shape="rect" coords="' + images[nr].inner + '" href="javascript:mapZoom(' + (nr + 1) + ')" title="' + msgZoomIn + '"/>';
	}
	if (nr > 0) {
		html += '<area shape="rect" coords="' + images[nr].outer + '" href="javascript:mapZoom(' + (nr - 1) + ')" title="' + msgZoomOut + '"/>';
	}
	html += '</map>';
	html += '<img src="' + images[nr].img.src + '" usemap="#map1" id="a"/>';
	document.getElementById('map').innerHTML = html;
	new Effect.Appear('a', {duration: 1.0, from: 0, to: 1}); // beforeStart: function() { inProgress = true; }, afterFinish: function() { inProgress = false; }});
}


/* --- funkcje do walidacji formularza --- */

//obcina ewentualne spacje z pocztku i końca zadanego łańcucha
function trim (s)
{
	return s.replace (new RegExp('(^\\s*)|(\\s*$)', 'g'), '');
}


//sprawdza, czy zadany cig jest poprawnym składniowo adresem e-mail
function checkEMail(element, msg)
{
	var	validMail = /^[\w-]+(\.[\w-]+)*\@([\w-]+\.)+[\w]{2,6}$/;
	var email     = trim(element.value);
	if (email.search(validMail) == -1) {
		alert(msg);
		element.focus();
		return false;
	}
	return true;
}


function checkInput(element, msg)
{
	if (element.value == '') {
		alert(msg);
		element.focus();
		return false;
	}
	return true;
}


function checkCheckboxes(array, msg)
{
	if (array.length > 0) {
		for (i=0; i < array.length; i++) {
			if (array[i].checked) return true;
		}
	}
	else {
		return array.checked;
	}

	alert(msg);
	if (array.length > 0) {
		array[0].focus();
	}
	else {
		array.focus();
	}
	return false;
}


function checkSelect (element, msg)
{
	if (element.selectedIndex == 0) {
		alert(msg);
		element.focus();
		return false;
	}
	return true;
}


function disableButton (form) {
	form.elements['submit'].disable = true;
}


/* --- przelaczanie stron w wyszukiwarce --- */

function changePage (_offset)
{
	var form = document.getElementById ('formSearchResults');
	if (form == null) {
		return false;
	}
	
	var field = form.elements['recordsoffset'];
	if (field == null) {
	    return false;
	}
	
	field.value = _offset;
	form.submit();
}

/* obsluga formularzy w helpdek */

function sjobf(form) {

	var strzalki = document.getElementById("ldg");
	if (strzalki != null) {
		strzalki.style.display = 'block';
	}
	return true
}
function showErr(name) {
	var el = document.getElementById('err.' + name);
	if (el != null) {
		el.style.display = 'block';
	}
}
function hideErrs(names) {
	for(i=0;i<names.length;i++) {
		var el = document.getElementById('err.' + names[i]);
		if (el != null) {
			el.style.display = 'none';
		}
	}
}
function helpDesk(form) {
	var result = true;
	hideErrs(new Array('imie','firma','tel','email','opis'));
	if (form.elements['imie'].value == '') {
		result = false;
		showErr('imie');
	}
	if (form.elements['firma'].value == '') {
		result = false;
		showErr('firma');
	}
	if (form.elements['opis'].value == '') {
		result = false;
		showErr('opis');
	}

	var validPhone = /^\+[\d]{8,20}$/;
    if (form.elements["tel"].value.search(validPhone)==-1) {
		result = false;
		showErr('tel');
	}
	var validMail = /^[\w-]+(\.[\w-]+)*\@([\w-]+\.)+[\w]{2,6}$/;

	if (form.elements['email'].value.search(validMail)==-1) {
		result = false;
		showErr('email');
	}


	var strzalki = document.getElementById("ldg");
	if (strzalki != null && result) {
		strzalki.style.display = 'block';
	}
	return result;
}
function checkForm(form) {
	// Dane osobowe
	if (!checkInput(form.elements['imie'], 'Proszę podać imię i nazwisko')) {
		return false;
	}

	// Nazwa firmy
	if (!checkInput(form.elements['firma'], 'Proszę podać nazwę firmy')) {
		return false;
	}

	// Dane teleadresowe
	if (!checkEMail(form.elements['email'], 'Proszę podać poprawny adres email')) {
		return false;
	}
	if (!checkInput(form.elements['tel'], 'Proszę podać telefon')) {
		return false;
	}

	// Opis problemu
	if (!checkInput(form.elements['opis'], 'Proszę możliwie szczegółowo opisać problem')) {
		return false;
	}
	
	var strzalki = document.getElementById("ldg");
	if (strzalki != null) {
		strzalki.style.display = 'block';
	}

	return true;
}