function checkemail(str){
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z0-9]{2,6}(?:\.[a-z]{2})?)$/i
	if (filter.test(str))
		return true;
	else{
		alert("Adres e-mail niepoprawny!")
		return false;
	}
}

function onNewsletterFocus(qt)
{
	if(qt.value =='adres e-mail')
		qt.value = '';
}

function dodaj()
{
	if(checkemail(document.forms['biuletyn']['email'].value)) {
		document.location = 'newsletter.php?email='+document.forms['biuletyn']['email'].value+'&do=add';
	}
}

function showPopup(w,h,site){
	var l = (screen.width - w) / 2;
	var t = (screen.height - h) / 2;
	wnd = window.open(site,'concordia','titlebar=no,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=' + w + ',height=' + h + ',top=' + t + ',left=' + l);
	wnd.focus();
}

function wCzymMogePomoc() {
	showPopup(379,520,'popup_pomoc.php');
}
function popupURL(url){
	opener.location.href=url;
	window.close();
}

function onSzukaj(form)
{
	if(!form)
		form = document.forms.szukaj;
	if(form['q'].value == '' || form['q'].value =='Szukaj' || form['q'].value =='Wpisz szukane słowo')
	{
		form['q'].value = 'Wpisz szukane słowo';
	}
	else
		form.submit();
}

function onSzukajFocus(qt)
{
	if(qt.value =='Szukaj' || qt.value =='Wpisz szukane słowo')
		qt.value = '';
}