var CLIENT_ID = '2df09bff-902a-4609-9b9b-f38018ebf5a0';
var BASE_URL = 'http://www.serviceyourclients.com/BookingSystem/';
var DEFAULT_LIMIT = 3000;
var MISSING_FIELD_MSG = 'Please fill in all fields marked with an asterisk';
var PAST_CUTOFF_TEXT = 'We can not take bookings on the same day please call on 0131 556 6040';
var TODAY_CUTOFF_TIME = '0:1';
var BOOKING_LIMIT_DATES = new Array();var BOOKING_LIMIT_VALUES = new Array();var CURRENT_BOOKING_LEVELS = new Array();

var agt=navigator.userAgent.toLowerCase(); 
var is_major = parseInt(navigator.appVersion); 
var is_ie     = ((agt.indexOf('msie') != -1)); 
var is_ie3 = (is_ie && (is_major < 4)); 
var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf('msie 4')!=-1) );
var is_ie5up = (is_ie && !is_ie3 && !is_ie4);
var is_Safari = (agt.indexOf('applewebkit')!=-1);

var monthName = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');
function getTag(tagName)
{
	return document.getElementById(tagName);
}

function ValidateCheck() 
{
	try
	{

		fields = new Array;			
		fields[0] = getTag('1-firstname').value;	
		fields[1] = getTag('2-surname').value;
		fields[2] = getTag('email').value;	
		fields[3] = getTag('guests').value;

		getTag('date').value = getTag('txt_day').value + ' ' + getTag('txt_month').value + ' ' + getTag('txt_year').value;
		
		allThere = true;
		for (i = 0; i < fields.length; i++) {
			val = fields[i];
			if (val.length < 1) 
				allThere = false;						
		}								
		if (allThere) 
		{
			return true;
		}
		else 
		{
			alert (MISSING_FIELD_MSG);
			return false;
		}
	}
	catch(e)
	{
		alert (e.message);
		return false;
	}
}

function DateComp(d1, d2)
{
// returns -1 if d1 < d2
// returns 1 if d1 > d2
// returns 0 if d1 = d2

	if (d1.getYear() > d2.getYear())
		return 1;
	else if (d1.getYear() < d2.getYear())
		return -1;
	else
	{
		if (d1.getMonth() > d2.getMonth())
			return 1;
		else if (d1.getMonth() < d2.getMonth())
			return -1;
		else
		{
			if (d1.getDate() > d2.getDate())
				return 1;
			else if (d1.getDate() < d2.getDate())
				return -1;
			else
				return 0;
		}
	}
}

function CheckValidDate()
{
	var bookDate = new Date(getTag('date').value);
	
	var todayDate = new Date();

	if (DateComp(bookDate, todayDate) == 0)
	{
		alert('Bookings cannot be made for the same day');
		return false;
	}
	else if(DateComp(bookDate, todayDate) == -1)
	{
		alert('This booking occurs in the past, please amend and try again');
		return false;
	}
	else
	{
		return true;
	}
}


function FillOffers()
{
	var offersEl = document.getElementById('offers');
	if (offersEl != null)
	{
		offersEl.innerHTML = '';
		var oOption = document.createElement('option');
		oOption.text = 'Loading Offers';
		oOption.value = 0;
		if (is_ie) offersEl.add(oOption); else offersEl.appendChild(oOption);
		offersEl.disabled = true;

		var selDate = getTag('txt_day').value + '/' + getTag('txt_month').value + '/' + getTag('txt_year').value;
		var url = BASE_URL + 'DynamicJS.aspx?clientid=' + CLIENT_ID + '&seldt=' + selDate;
		var e = document.createElement('script');
   		e.src = url;
		e.type='text/javascript';
		document.getElementsByTagName('head')[0].appendChild(e);
	}
}

function SetClientTag()
{
	var oInput = document.createElement('input');
	oInput.name = 'clientid';
	oInput.id = 'clientid';
	oInput.value = CLIENT_ID;
	oInput.type = 'hidden';
	
	document.getElementsByTagName('form')[0].appendChild(oInput);
}

function SetDatePicker()
{
	// insert date picker here (replace with Calendar later)

//	var oDayHidden = document.createElement('input');
//	oDayHidden.name = 'date';
//	oDayHidden.id = 'date';
//	oDayHidden.type = 'hidden';


    var d = new Date();
	var currD = d.getDate();
	var currM = d.getMonth() + 1;
	var currY = d.getYear();

    if(currY < 2000)
        currY = currY + 1900;


	var oDay = document.createElement('select');
	oDay.name = 'txt_day';
	oDay.id = 'txt_day';
	oDay.onchange=FillOffers;


	for(var dayindex = 1; dayindex < 32; dayindex++)
	{
		var oOption = document.createElement('OPTION');
		if ((dayindex == 1) || (dayindex == 21) || (dayindex == 31)) 
			oOption.text=dayindex + 'st';
		else if ((dayindex == 2) || (dayindex == 22))
			oOption.text=dayindex + 'nd';
		else if ((dayindex == 3) || (dayindex == 23))
			oOption.text=dayindex + 'rd';
		else
			oOption.text=dayindex + 'th';
		
		oOption.value=dayindex;

		if (is_ie)
		{
			oDay.add(oOption);
		}
		else
		{
			oDay.appendChild(oOption)
		}

		if (dayindex == currD)
		{
			oOption.selected = 'true';
		}
	}


	var oMonth = document.createElement('select');
	oMonth.name = 'txt_month';
	oMonth.id = 'txt_month';
	oMonth.onchange=FillOffers;

	for(var monindex = 1; monindex < 13; monindex++)
	{
		var oOption = document.createElement('OPTION');
		oOption.text=monthName[monindex-1];
		oOption.value=monindex;
		if (is_ie)
		{
			oMonth.add(oOption);
		}
		else
		{
			oMonth.appendChild(oOption)
		}
		if (monindex == currM)
			oOption.selected = 'true';
		
	}


	var oYear = document.createElement('select');
	oYear.name = 'txt_year';
	oYear.id = 'txt_year';
	oYear.onchange=FillOffers;

	for(var yrindex = currY; (yrindex < currY + 2); yrindex++)
	{
		var oOption = document.createElement('OPTION');
		oOption.text=yrindex;
		oOption.value=yrindex;
		if (is_ie)
		{
			oYear.add(oOption);
		}
		else
		{
			oYear.appendChild(oOption)
		}
		if (yrindex == currY)
			oOption.selected = 'true';
		
	}

//	document.getElementById('datePicker').appendChild(oDayHidden);
	document.getElementById('datePicker').innerHTML = '<input type=\'hidden\' name=\'date\' id=\'date\'>';
	document.getElementById('datePicker').appendChild(oDay);
	document.getElementById('datePicker').appendChild(oMonth);
	document.getElementById('datePicker').appendChild(oYear);

}

function SetFormTags()
{
	var oForm = document.getElementsByTagName('form')[0];
	oForm.onsubmit=ValidateCheck;
	oForm.method='post';
	oForm.name='MForm';
	oForm.action= BASE_URL + 'process.aspx';
	// fill in form tag attributes here (method, action, onsubmit)
}

function SetStart()
{
	SetClientTag();
	SetDatePicker();
	SetFormTags();
	FillOffers();
	getTag('1-firstname').focus();
}
SetStart();