function searchForm()
{
	this.rows = Array();
}

searchForm.prototype.addRow = function()
{
	var new_row = Array('1', '1');
	this.rows.push(new_row);
}

searchForm.prototype.deleteRow = function(del)
{
	var new_rows = Array();

	for(var i = 0; i < this.rows.length; i++)
	{
		if (i != del)
		{
			new_rows.push(this.rows[i]);
		}
	}

	this.rows = new_rows;
}

searchForm.prototype.setType = function(row, type)
{
	this.rows[row][0] = type;
}

searchForm.prototype.setNo = function(row, no)
{
	this.rows[row][1] = no;
}

searchForm.prototype.createRowNode  = function(table, i, type, no)
{
	var new_tr = document.createElement('tr');
	var td = document.createElement('td');

	td.style.textAlign = 'right';

	var checkbox = document.createElement('input');
	checkbox.setAttribute('type', 'checkbox');
	checkbox.setAttribute('value', i);
	td.appendChild(checkbox);
	checkbox.onclick = function()
	{
		search_form.deleteRow(this.value);
		search_form.display();
	}

	var text = document.createTextNode('room type ' + (i + 2));
	td.appendChild(text);

	new_tr.appendChild(td);

	var td = document.createElement('td');
	var select = document.createElement('select');

	select.setAttribute('name', 'room_type[' + (i + 2) + ']');

	var room_types = ['single: sleeps 1', 'double: sleeps 2', 'twin: sleeps 2', 'triple: sleeps 3', 'quad: sleeps 4'];

	for (j = 0; j < room_types.length; j++)
	{
		var option = document.createElement('option');
		option.setAttribute('value', i + '_' + (j + 1));
		var text = document.createTextNode(room_types[j]);
		option.appendChild(text);
		select.appendChild(option);
	}

	select.selectedIndex = parseInt(type) - 1;

	td.appendChild(select);

	select.onchange = function()
	{
		var comp = this.value.split('_');
		search_form.setType(comp[0], comp[1]);
	}

	text = document.createTextNode(' no. of rooms ');
	td.appendChild(text);

	select = document.createElement('select');

	select.setAttribute('name', 'room_number[' + (i + 2) + ']');

	for (j = 1; j <= 9; j++)
	{
		option = document.createElement('option');
		option.setAttribute('value', i + '_' +j);
		text = document.createTextNode(j);
		option.appendChild(text);
		select.appendChild(option);
	}

	select.selectedIndex = parseInt(no) - 1;

	td.appendChild(select);

	select.onchange = function()
	{
		var comp = this.value.split('_');
		search_form.setNo(comp[0], comp[1]);
	}

	new_tr.appendChild(td);

	table.appendChild(new_tr);

	checkbox.checked = true;
}

searchForm.prototype.display = function()
{
	var table =  document.getElementById('searchform');
	var remove = Array();

	for (var i = 0; i < table.childNodes.length; i++)
	{
		if (table.childNodes[i].className != 'static')
		{
			remove.push(table.childNodes[i]);
		}
	}

	for (var i = 0; i < remove.length; i++)
	{
		table.removeChild(remove[i]);
	}

	for (var i = 0; i < this.rows.length; i++)
	{
		this.createRowNode(table, i, this.rows[i][0], this.rows[i][1]);
	}

	if (this.rows.length < 5)
	{
		var new_row = document.createElement('tr');
		var td = document.createElement('td');

		td.style.textAlign = 'right';

		var checkbox = document.createElement('input');
		checkbox.setAttribute('type', 'checkbox');
		td.appendChild(checkbox);
		checkbox.onclick = function()
		{
			search_form.addRow();
			search_form.display();
		}
		var text = document.createTextNode('room type ' + (this.rows.length + 2));
		td.appendChild(text);
		new_row.appendChild(td);

		td = document.createElement('td');
		new_row.appendChild(td);

		table.appendChild(new_row);
	}
}

function dateChange()
{
	var comp = document.getElementById('checkin_month').value.split('_');
	var checkin_date = new Date(comp[1], parseInt(comp[0]) - 1, document.getElementById('checkin_day').value);
	var comp = document.getElementById('checkout_month').value.split('_');
	var checkout_date = new Date(comp[1], parseInt(comp[0]) - 1, document.getElementById('checkout_day').value);
	var now = new Date(2008, 4, 16);
	//now = new Date(now.getFullYear(), now.getMonth(), now.getDate());

	if (checkin_date < now)
	{
		checkin_date = now;
		document.getElementById('checkin_day').selectedIndex = checkin_date.getDate() - 1;
	}

	document.getElementById('checkin_day').selectedIndex = checkin_date.getDate() - 1;
	var checkin_month = document.getElementById('checkin_month');
	for (var i = 0; i < checkin_month.childNodes.length; i++)
	{
		if (checkin_month.options[i].value == (checkin_date.getMonth() + 1) + '_' + checkin_date.getFullYear())
		{
			break;
		}
	}
	checkin_month.selectedIndex = i;

	if (checkin_date >= checkout_date)
	{
		checkout_date = new Date(checkin_date.valueOf() + 86400000);
		document.getElementById('checkout_day').selectedIndex = checkout_date.getDate() - 1;
		var checkout_month = document.getElementById('checkout_month');
		for (var i = 0; i < checkout_month.options.length; i++)
		{
			if (checkout_month.options[i].value == (checkout_date.getMonth() + 1) + '_' + checkout_date.getFullYear())
			{
				break;
			}
		}
		checkout_month.selectedIndex = i;
	}

	var no_nights = Math.round((checkout_date - checkin_date) / 86400000);

	no_of_nights.removeChild(no_of_nights.firstChild);
	var text = document.createTextNode(no_nights);

	no_of_nights.appendChild(text);

	calendar1.setDate(checkin_date);
	calendar2.setDate(checkout_date);
}

function calendarSelect(calendar, date)
{
	var comp = date.split(' ');

	if (calendar == calendar1)
	{
		document.getElementById('checkin_day').selectedIndex = parseInt(comp[0]) - 1;

		var checkin_month = document.getElementById('checkin_month');
		for (var i = 0; i < checkin_month.childNodes.length; i++)
		{
			if (checkin_month.options[i].value == parseInt(comp[1]) + '_' + comp[2])
			{
				break;
			}
		}
		checkin_month.selectedIndex = i;
	}

	if (calendar == calendar2)
	{
		document.getElementById('checkout_day').selectedIndex = parseInt(comp[0]) - 1;

		var checkin_month = document.getElementById('checkout_month');
		for (var i = 0; i < checkin_month.childNodes.length; i++)
		{
			if (checkin_month.options[i].value == parseInt(comp[1]) + '_' + comp[2])
			{
				break;
			}
		}
		checkin_month.selectedIndex = i;
	}

	dateChange();
	this.callCloseHandler();
}

function calendarHide()
{
	this.hide();
}

function calendar1Check(date)
{
	var now = new Date(2008, 4, 16);
	//now = new Date(now.getFullYear(), now.getMonth(), now.getDate());

	return (date < now);
}

function calendar2Check(date)
{
	var comp = document.getElementById('checkin_month').value.split('_');
	var checkin_date = new Date(comp[1], parseInt(comp[0]) - 1, document.getElementById('checkin_day').value);

	return (date.valueOf() < checkin_date.valueOf() + 86400000);
}

function searchFormLoad()
{
	search_form = new searchForm();
	search_form.display();

	var span = document.createElement('span');
	var text = document.createTextNode(' nights: ');
	span.appendChild(text);

	no_of_nights = document.createElement('strong');
	span.appendChild(no_of_nights);

	text = document.createTextNode('1');
	no_of_nights.appendChild(text);

	var placeholder = document.getElementById('nights_placeholder');
	var placeholder_parent = placeholder.parentNode;

	placeholder_parent.replaceChild(span, placeholder);

	document.getElementById('checkin_day').onchange = dateChange;
	document.getElementById('checkin_month').onchange = dateChange;
	document.getElementById('checkout_day').onchange = dateChange;
	document.getElementById('checkout_month').onchange = dateChange;

	document.getElementById('sh_calendar1').onclick = function()
	{
		calendar1.showAtElement(this, 'bR');
	}

	document.getElementById('sh_calendar2').onclick = function()
	{
		calendar2.showAtElement(this, 'bR');
	}

	calendar1 = new Calendar(0, null, calendarSelect, calendarHide);
	calendar1.setDateFormat('%e %m %Y');
	calendar1.setDateStatusHandler(calendar1Check);
	calendar1.create();

	calendar2 = new Calendar(0, null, calendarSelect, calendarHide);
	calendar2.setDateFormat('%e %m %Y');
	calendar2.setDateStatusHandler(calendar2Check);
	calendar2.create();

	dateChange();
}

if (window.addEventListener)
{
	window.addEventListener('load', searchFormLoad, false);
}
else
{
	window.attachEvent('onload', searchFormLoad); // Internet Explorer :(
}