function toggle(id) {
	document.getElementById(id).style.display =
		document.getElementById(id).style.display == 'none' ? 'block' : 'none';
}

function prepareToggle() {
	var ps = document.getElementsByTagName('p');
	for (var i = 0; i < ps.length; i++) {		
		if ( ps[i].className == 'hidden' || ps[i].className == 'hidden partners' ) {
			ps[i].style.display = 'none';
		}
	}
	var ps = document.getElementsByTagName('div');
	for (var i = 0; i < ps.length; i++) {		
		if ( ps[i].className == 'hidden' || ps[i].className == 'hidden partners' ) {
			if ( location.href.indexOf( ps[i].id ) > 0 ) {
				ps[i].style.display = 'block';
			} else {
				ps[i].style.display = 'none';
			}		}
	}
}

function chngImage(img) {
	document.getElementById('img_photo').src = img;
}	

function openWindow(url, name, width, height) {
  popupWin = window.open(url, name, ',width=' + width + ',height=' + height +  ',scrollbars=1,status=0,resizable=1,left=25,right=25')
}

function updateDep() {	
	var arr = new Date( document.getElementById('arr_y').value, parseInt(document.getElementById('arr_m').value) - 1, document.getElementById('arr_d').value );
	var dep = new Date( document.getElementById('arr_y').value, parseInt(document.getElementById('arr_m').value) - 1, parseInt(document.getElementById('arr_d').value) + 1 );
	
	document.getElementById('arr_y').value = arr.getYear();
	document.getElementById('arr_m').value = arr.getMonth() + 1, 
	document.getElementById('arr_d').value = arr.getDate();
	
	document.getElementById('dep_y').value = dep.getYear();
	document.getElementById('dep_m').value = dep.getMonth() + 1, 
	document.getElementById('dep_d').value = dep.getDate();	
}

function submitNB() {
	url = 'https://secure.netbooking.cz/alta/index.html?arrival='
		+ document.getElementById('arr_d').value + '.'
		+ document.getElementById('arr_m').value + '.'
		+ document.getElementById('arr_y').value
		+ '&departure='
		+ document.getElementById('dep_d').value + '.'
		+ document.getElementById('dep_m').value + '.'
		+ document.getElementById('dep_y').value;
	window.open(url, '', ',width=1000,height=780,scrollbars=1,status=1,resizable=1,left=25,right=25');
	//alert( url );
}	

function init() {
	initLightbox();
	prepareToggle();
}

window.onload = init;