window.onload = jsFnOnload;

function jsFnOnload()
{
	
	if (document.getElementById)
	{	
	  
		/* Associate logo's onclick event with home page */
		var logo = document.getElementById("logo");
 		if (logo != null) {
			logo.onclick = function() {
				window.location = 'index.php';
				return false;
			}
		}
		
		var menu = document.getElementById("topmenu");
 		if (menu != null) 
		{
			var lis = menu.getElementsByTagName("li");
			for(aliindex=0;aliindex<lis.length;aliindex++)
			{
				if(lis[aliindex].className=='level1')
				{
					lis[aliindex].onclick = JSFnMenuLiClick;
					
					lis[aliindex].onmouseover = JSFnMenuLiOver;
					lis[aliindex].onmouseout = JSFnMenuLiOut;
				}
			}
		}		
		
		var aContactForm = document.getElementById('contactform');
		if (aContactForm != null) aContactForm.onsubmit = JSFnValidateContactForm;
		
		//var aImageZoom = document.getElementById('productlink');
		//if (aImageZoom != null) aImageZoom.onclick = JSFnImageZoom;
		
		var aCheckoutForm = document.getElementById('checkoutform');
		if (aCheckoutForm != null) aCheckoutForm.onsubmit = JSFnValidateCheckout;
		
		var aDeliveryForm = document.getElementById('deliveryinformation');
		if (aDeliveryForm != null) aDeliveryForm.onsubmit = JSFnValidateDelivery;
		
		var aProductZoom = document.getElementById('productimagezoom');
		if (aProductZoom != null) aProductZoom.onclick = JSFnProductZoom;			
	}
	
}

function JSFnProductZoom()
{
	var aWindow = window.open(this.href, 'productbig', 'menubar=no, resizeable=no, toolbar=no, width=600px, height=600px')
	aWindow.focus();
	return false;
}

function JSFnMenuLiOver()
{
	this.className = 'level1 hover';
}

function JSFnMenuLiOut()
{
	this.className = 'level1';
}

function JSFnMenuLiClick()
{
	window.location = this.childNodes[0].href;
	//alert(this.childNodes[0]);
}

function JSFnGoBack()
{
	history.go(-1);
}

function JSFnImageZoom()
{
	var aWindow = window.open(this.href, 'productbig', 'scrollbars=yes, menubar=no, resizeable=no, toolbar=no, width=600px, height=800px')
	aWindow.focus();
	return false;
}

var aContactRequiredFields = new Array ("name","Please enter your name to continue");

function JSFnValidateContactForm()
{
	var aEmail = document.getElementById('email');
	var aTelephone = document.getElementById('telephone');

	if ((aEmail != null) && (aTelephone != null))
	{
		if ((aEmail.value == '') && (aTelephone.value == ''))
		{
			alert('You must provide either your telephone number or email address to continue.');
			return false;
		}
	}

	return JSFnValidateForm(aContactRequiredFields);
}

CheckoutRequiredFields = new Array ("terms","You must tick to say that you agree to our terms and conditions in order to checkout.",
									"privacy","You must tick to say that you have read our privacy policy in order to continue.");
function JSFnValidateCheckout()
{
	return JSFnValidateForm(CheckoutRequiredFields);
}

DeliveryRequiredFields = new Array ("CustomerName","You must enter your name to continue.",
									"CustomerEmail","You must enter your email address to continue.",
									"DeliveryAddressLine1","You must enter the first line of your delivery address to continue.",
									"DeliveryAddressLine4","You must enter your delivery city/town to continue.",
									"DeliveryPostCode","You must enter your delivery postcode to continue.");

DeliveryBillingRequiredFields = new Array ("HowDidYouHear","You must tell us how you heard about nabu baby.",
										   "BillingName","You must enter your billing name to continue.",
										   "BillingAddressLine1","You must enter the first line of your billing address to continue.",
										   "BillingAddressLine4","You must enter your billing city/town to continue.",
										   "BillingPostCode","You must enter your billing postcode to continue.");

function JSFnValidateDelivery()
{
	aResult = JSFnValidateForm(DeliveryBillingRequiredFields);

	if (aResult != false)
	{
		var aDeliveryFirstName = document.getElementById('CustomerFirstName');
		var aDeliverySurname = document.getElementById('CustomerSurname');
		var aDeliveryAddress = document.getElementById('DeliveryAddressLine1');
		var aDeliveryCity = document.getElementById('DeliveryAddressLine4');
		var aDeliveryPostcode = document.getElementById('DeliveryPostCode');
		if ((aDeliveryFirstName.value != '') || (aDeliverySurname.value != '') || (aDeliveryAddress.value != '') || (aDeliveryCity.value != '') || (aDeliveryPostcode.value != ''))
		{
			aResult = JSFnValidateForm(DeliveryRequiredFields);
		}

		if (aResult == true)
		{
			if (document.getElementById('terms').checked == false)
			{
				alert("You must tick to say that you agree to our terms and conditions and privacy policy in order to checkout.");
				aResult = false;
			}
			else aResult = true;
		}
	}
	
	return aResult;
}

function JSFnValidateForm(aRequiredFields)
{
	for (aIndex = 0; aIndex < aRequiredFields.length; aIndex = aIndex + 2)
	{
		currElement = document.getElementById(aRequiredFields[aIndex]);
		if (currElement != null)
		{
			if  (   (   (currElement.type == 'text')
				     && (currElement.value == ''))
				 || (   (currElement.type == 'password')
				     && (currElement.value == ''))
				 || (   (currElement.type == 'checkbox')
				     && (currElement.checked == false))
				 || (   (currElement.type == 'file')
				     && (currElement.value == ''))
				 || (   (currElement.type == 'textarea')
				     && (currElement.value == ''))
				 || (   (currElement.type == 'select-one')
				     && (currElement.value == '')))
			{
				alert(aRequiredFields[aIndex + 1]);
				return false;
			}
			else if (currElement.type == 'radio')
			{
				aIndex = aIndex + 2;
				if (!currElement.checked)
				{
					currElement = document.getElementById(aRequiredFields[aIndex]);
					if ((currElement.type == 'radio') && (!currElement.checked))
					{
						alert(aRequiredFields[aIndex + 1]);
						return false;
					}
				}
			}
		}
	}
	return true;
}