function OnClickBuy(ProductID)
{
	formBuy.ProductID.value = ProductID;
	formBuy.submit();
}

function OnClickSave(ProductID)
{
	formSave.ProductID1.value = ProductID;
	formSave.submit();
}

function OperationNext()
{
	if (formShoppingCart1.ProductCount.value == 0)
	{
	}
	else
		window.location.href = "webshoppingcart2.asp";
}

function EnableButton(id, bEnable)
{
	document.getElementById(id).disabled = !bEnable;
}

function OperationContinue()
{
//	close current window
 	window.open("","_self");
   	top.opener = null;
   	top.close();
}

function OnKeyDown(nProductID)
{
	if(event.keyCode==13)
	{
		ChangeNumber(nProductID)
	}
}


function IsNumeric(str)
{
	return !isNaN(str);
}

String.prototype.Trim = function() 
{ 
	return this.replace(/(^\s*)|(\s*$)/g, "");
} 


function ChangeNumber(nProductID)
{
	var num;

	num = document.getElementById(nProductID).value;
	
	if(!IsNumeric(num) || num<0)
	{
		formShoppingCart1.ProductNum.value = -1;
		formShoppingCart1.ProductID.value = nProductID;
		formShoppingCart1.ButtonID.value = '刷新';
		formShoppingCart1.submit();
	}
	else if(num == 0)
	{
		RemoveProduct(nProductID)	
	}
	else
	{
		formShoppingCart1.ProductNum.value = num;
		formShoppingCart1.ProductID.value = nProductID;
		formShoppingCart1.ButtonID.value = '改数量';
		formShoppingCart1.submit();
	}
}

function RemoveProduct(nProductID)
{
	if(confirm("你真的要删除编号为 "+nProductID+" 的商品吗？"))
	{
		formShoppingCart1.ProductNum.value = 0;
		formShoppingCart1.ProductID.value = nProductID;
		formShoppingCart1.ButtonID.value = '删除';
		formShoppingCart1.submit();
	}
}

function InputChanged()
{
	bModified = true;
}


function OperationConfirm()
{
	if(document.formShoppingCart2.CustomerName.value.Trim() == "")
	{
		alert("收货人姓名不能为空！");
		document.formShoppingCart2.CustomerName.focus();
	}
	else if(formShoppingCart2.CustomerAddress.value.Trim() == "")
	{
		alert("收货地址不能为空！");
		document.formShoppingCart2.CustomerAddress.focus();
	}
	else if(formShoppingCart2.CustomerPostcode.value.Trim() == "")
	{
		alert("收货邮政编码不能为空！");
		document.formShoppingCart2.CustomerPostcode.focus();
	}
	else if(formShoppingCart2.CustomerMobile.value.Trim() == "")
	{
		alert("收货手机不能为空！");
		document.formShoppingCart2.CustomerMobile.focus();
	}
//	else if(ObjectChecked('InvoiceSelect2R') && ObjectChecked('InvoiceTitle2A')
	else if(ObjectChecked('InvoiceSelect2R') &&  formShoppingCart2.InvoiceName.value.Trim() == "")
	{
		alert("发票抬头不能为空！");
		document.formShoppingCart2.InvoiceName.focus();
	}
	else if(document.formShoppingCart2.OrderComment.value.length>100)
	{
		alert("订单备注超过100汉字，请删除一些内容");
		document.formShoppingCart2.OrderComment.focus();
	}
	else
	{
		if(bModified == true)
		{
			if(confirm("是否保存收货人地址信息，以便下次购物使用？"))
			{
				formShoppingCart2.SaveCustomerInfo.value = "YES";
			}
		}
		
		formShoppingCart2.submit();
	}
}

function OperationShoppingCart1()
{
	self.location = 'webshoppingcart1.asp';
}

function OperationShoppingCart2()
{
	self.location = 'webshoppingcart2.asp';
}

function OperationCheckout()
{
	formShoppingCart3.submit();
}