function changeQuantity()
{

}

function checkQuantity(event)
{
	if (!event)
		return true;

	var keycode;
	if ( browser.isIE )
	{
		keycode = event.keyCode;
	}
	else
	{
		keycode = event.which;
	}

	keychar = String.fromCharCode(keycode);
	reg = /\d/;
	return reg.test(keychar);

}

function reloadCart()
{

}

function DoPaymentChange( formName )
{
	// Find the current payment method and display needed info
	var form = document.forms[formName];

	if (!form)
		return;

	var select = document.getElementById('PaymentMethod');

	if (!select)
		return;

	var paymentsDiv = document.getElementById( "CreditCard" );

	if (select.options[select.selectedIndex].text == "Credit Card")
			paymentsDiv.style.display = "block";
	else
			paymentsDiv.style.display = "none";

	var accountDiv = document.getElementById( "Account" );

	if (select.options[select.selectedIndex].text == "Account")
			accountDiv.style.display = "block";
	else
			accountDiv.style.display = "none";
}

function CheckCreditCard( formName )
{
	var form = document.forms[formName];

	if (!form)
		return;

	var select = document.getElementById('PaymentMethod');

	if (!select || select.options[select.selectedIndex].text != "Credit Card")
		return true;

	var year = form.ExYear.value;
	var month = form.ExMonth.value;

	today = new Date();
	expiry = new Date(year, month);

	if (today.getTime() > expiry.getTime())
	{
		alert("Your credit card expiry date is wrong, please check it");
		return false;
	}

	return true;
}