var strDays = 31;
function Left(str, n){
	if (n <= 0)
	    return "";
	else if (n > String(str).length)
	    return str;
	else
	    return String(str).substring(0,n);
}
function Right(str, n){
    if (n <= 0)
       return "";
    else if (n > String(str).length)
       return str;
    else {
       var iLen = String(str).length;
       return String(str).substring(iLen, iLen - n);
    }
}


function sendBokning() {
	Datum = _id('BManad').value + '-' + _id('BDag').value;
	
	if ((parseInt(_id('BDag').value) + parseInt(_id('BNatter').value) >= strDays)) {
		overday = strDays - (parseInt(_id('BDag').value) + parseInt(_id('BNatter').value));
		overday = Math.abs(overday);
		if(parseInt(Right(_id('BManad').value, 2)) == 12) {
			Datum2 = (parseInt(Left(_id('BManad').value, 4)) + 1) + '-01-' + overday;
		}
		else {
			theMonth = (parseInt(Right(_id('BManad').value, 2)) + 1)
			if(theMonth <= 9){theMonth = '0'+theMonth+''}
			Datum2 = Left(_id('BManad').value, 4) + '-' + theMonth + '-' + overday;
		}
		//alert(overday);
	}
	else {
		Datum2 = _id('BManad').value + '-' + (parseInt(_id('BDag').value) + parseInt(_id('BNatter').value));
	}
	
	
	DBSYS = '89CE9CE2EDB44870B5D27679EE7312D3';
	Vuxna = _id('BVuxna').value;
	Ung = _id('BUngdomar').value;
	Barn = _id('BBarn').value;

	window.location = 'http://www.storhogna.se/byosweb/redirfromsearchform.aspx?categoryID='+ DBSYS +'&dateFrom='+ Datum +'&dateTo='+ Datum2 +'&numAdults='+ Vuxna +'&numChildren='+ Ung +'&numInfants='+ Barn +'';
}

function getDays(strMonth,strYear) {
	strYear = parseInt(Left(strMonth, 4));
	strMonth = parseInt(Right(strMonth, 2));
	//alert(strYear);
	//alert(strMonth);

	if(strMonth == 1 || strMonth == 3 || strMonth == 5 || strMonth == 7 || strMonth == 8 || strMonth == 10 || strMonth == 12) {
		strDays = 31;
		_showId('BDay29');
		_showId('BDay30');
		_showId('BDay31');
	}
	if(strMonth == 4 || strMonth == 6 || strMonth == 9 || strMonth == 11) {
		strDays = 30;
		_showId('BDay29');
		_showId('BDay30');
		_hideId('BDay31');
	}
	if(strMonth == 2) {
		if((parseInt(strYear) % 4 == 0 && !(parseInt(strYear) % 100 == 0)) || (parseInt(strYear) % 400 == 0)) {
			strDays = 29;
			_showId('BDay29');
			_hideId('BDay30');
			_hideId('BDay31');
		 }
		else {
			strDays = 28;
			_hideId('BDay29');
			_hideId('BDay30');
			_hideId('BDay31');
		}
	}
}