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

function updateDep() {
	var arr = new Date( document.getElementById('arr_y').value, parseInt(document.getElementById('arr_m').value, 10) - 1, document.getElementById('arr_d').value ),
	    dep = new Date( document.getElementById('arr_y').value, parseInt(document.getElementById('arr_m').value, 10) - 1, parseInt(document.getElementById('arr_d').value, 10) + 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/romance/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;

//alert( $('ref') );

	if ( document.getElementById('ref').value ) {
//		alert( document.getElementById('ref').value );
		url = url + '&ref=' + document.getElementById('ref').value;
	}
	
	if (lang) {
	    url = url + '&lang=' + lang;
	}
	
	window.open(url, '', ',width=830,height=740,scrollbars=1,status=1,resizable=1,left=25,right=25');
	//alert( url );
}

function styleTables() {
	// add class='even'/'odd' to <TR> and class='first' to first <TD> unless table already has class
	var tables = document.getElementsByTagName('table');
	for (var i = 0; i < tables.length; i++) {
		if ( !tables[i].className ) {
			var tbody = tables[i].firstChild;
			if ( tbody.nodeName != 'TBODY' )
				tbody = tbody.nextSibling;
			var lines = tbody.childNodes;
			var even = 0;
			for (var j = 0; j < lines.length; j++) {
				if ( lines[j].nodeName == 'TR' ) {
					lines[j].className = even++ % 2 ? 'even' : 'odd';
					var first = lines[j].firstChild;
					if ( first.nodeName != 'TD' && first.nodeName != 'TH' )
						first = first.nextSibling;
					first.className = 'first';
				}
			}
		}
	}
}

function init() {
	styleTables();
}

window.onload = init;