var arrivalDateName = "checkin";
		var departureDateName = "checkout";
		var numOfNightsSelect = "nights";
		var numOfAdultsSelect = "adults";
		var numOfBedsSelect = "beds";
function checkLetters(val) {

	var re = new RegExp('^[0-9]{4}-[0-9]{2}-[0-9]{2}$');
	if (val.match(re)) {
		//alert(val);
		
		return true;
	} else {
		
		return false;
	}

}

function wyslij() {

	if (document.forms.form.arrivaldate.value == "") {
		alert("Data przyjazdu nie może być pusta");
		return false;
	}
	
	if (document.forms.form.departuredate.value == "") {
		alert("Data wyjazdu nie może być pusta");
		return false;
	}
	
	if (checkLetters(document.forms.form.arrivaldate.value)) {
	
		if (checkLetters(document.forms.form.departuredate.value)) {
		
			document.forms.form.submit();
		
		} else {
		
			alert("Niepoprawny format daty");
			return false;
		}
		
	
	}
	 else {
		
			alert("Niepoprawny format daty");
			return false;
		}
}



function change_city()
{
	counrty_id = document.wyszuk.countryid.options[document.wyszuk.countryid.selectedIndex].value;
	
		//jeśli nie wybral panstwa
		if (counrty_id==-1) {
			document.wyszuk.cityid.options[0] = new Option(' - wybierz kraj w polu obok -', 0);
			document.wyszuk.cityid.disabled = true;
			return;
		}
		//czyszenie selecta cityid 
		while(document.wyszuk.cityid.options.length > 1)		
				document.wyszuk.cityid.options[1]=null;

		document.wyszuk.cityid.disabled = false;
		var x = 0;
		var cities = counties[counrty_id];
		for(var i=0; i<cities.length; i+=2)
		{
			document.wyszuk.cityid.options[x] = new Option(cities[i+1], cities[i]);
			x++;
		}
		
}


function change_city2(counrty_id)
{
	 
	
		//jeśli nie wybral panstwa
		if (counrty_id==0) {
			document.wyszuk.cityid.options[0] = new Option(' - wybierz kraj w polu obok -', 0);
			document.wyszuk.cityid.disabled = true;
			return;
		}
		//czyszenie selecta cityid 
		while(document.wyszuk.cityid.options.length > 1)		
				document.wyszuk.cityid.options[1]=null;

		document.wyszuk.cityid.disabled = false;
		var x = 0;
		var cities = counties[counrty_id];
		for(var i=0; i<cities.length; i+=2)
		{
			document.wyszuk.cityid.options[x] = new Option(cities[i+1], cities[i]);
			x++;
		}
		
}
function change_city_default()
{
	 
	if(document.wyszuk.cityid.options){
		//czyszenie selecta cityid 
		while(document.wyszuk.cityid.options.length > 1)		
				document.wyszuk.cityid.options[1]=null;

		document.wyszuk.cityid.disabled = false;
		var x = 0;
		var cities = counties[1];
		for(var i=0; i<cities.length; i+=2)
		{
			document.wyszuk.cityid.options[x] = new Option(cities[i+1], cities[i]);
			x++;
		}
		document.wyszuk.cityid.options[0].selected= true;
	}
}