function flag_select(obj, colour)
{
	obj.style.backgroundColor = colour;
	obj.form.title.focus();
}

function status_select(obj, colour)
{
	obj.style.color = colour;
	obj.form.title.focus();
}

function checkvals(form)
{
	var error = false;
	if (form.name.value=="")
	{
		form.name.style.border = '1px solid red';
		error = true;
	}
	else form.name.style.border = '';
	if (form.body.value=="")
	{
		form.body.style.border = '1px solid red';
		error = true;
	}
	else form.body.style.border = '';
	if (form.title.value=="")
	{
		form.title.style.border = '1px solid red';
		error = true;
	}
	else form.title.style.border = '';
	if (error) return false; else form.submit();
}


var oldLanguage = '';
var oldDate = '';
var currentLanguage = '';
var currentSelect = '';

function selectLanguage(lang)
{
	oldLanguage = currentLanguage;
	currentLanguage = lang;

	if (oldLanguage)
	{

		document.getElementById('tour_language_a_'+oldLanguage).style.color = 'blue';
		document.getElementById('tour_dates_'+oldLanguage).style.visibility = 'hidden';
	}

	document.getElementById('tour_language_a_'+currentLanguage).style.color = 'red';

	document.getElementById('tour_dates_'+currentLanguage).style.visibility = 'visible';
}

function selectDate(date)
{
	oldSelect = currentSelect;
	currentDate = date;
	currentSelect = ''+currentLanguage+'_'+date;
	
	if (oldSelect)
	{

		document.getElementById('tour_date_a_'+oldSelect).style.color = 'blue';
	}
	document.getElementById('tour_date_a_'+currentSelect).style.color = 'red';
}


function addAmount(field)
{
	var s = document.getElementById(field);
	
	if (s.value>=0) s.value = parseInt(s.value)+1;
	else s.value=0;
}

function removeAmount(field)
{
	var s = document.getElementById(field);
	
	if (s.value>0) s.value = parseInt(s.value)-1;
	else s.value=0;
}

function checkPreOrder(form)
{
	if (!currentLanguage)
	{
			alert('Select language!'); return false;
	}
	if (!currentSelect)
	{
		alert('Select date!'); return false;
	}
	
	var sum = parseInt(document.getElementById('sgl_amount').value) + parseInt(document.getElementById('tw_amount').value) +  parseInt(document.getElementById('tpl_amount').value) + parseInt(document.getElementById('qd_amount').value) + parseInt(document.getElementById('ch_amount').value);
	if (!sum)
	{
		alert('Select packages!'); return false;
	}
	
	
	
	form.tour_language.value = currentLanguage;
	form.tour_date.value = currentDate;
	form.submit();
	
}