var xmlHttp;

function GetXmlHttpObject() {
	try	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp = new XMLHttpRequest();
	}
	catch(e) {
		// Internet Explorer
		try	{
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e) {
			try {
				xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e) {
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
}

function addProduct(prodId, quantity, flagBuy) {	
	GetXmlHttpObject();
	url = "productajax.php";
	url = url + "?doAction=AddProduct&prodId=" + prodId + "&quantity=" + quantity + "&flagBuy=" + flagBuy;

	xmlHttp.onreadystatechange = stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function stateChanged() {
	if(xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {

		

		strResponseText = xmlHttp.responseText;
		arrResponseText = strResponseText.split("@");
		
		
		flMsg = arrResponseText[0];		
		totalQuantity = arrResponseText[1];
		totalPrice = arrResponseText[2];
		flagDelivery = arrResponseText[3];
		flagBuy = arrResponseText[4];
		
		// total quantity
		document.getElementById("quantity").innerHTML = totalQuantity;
		// price
		document.getElementById("price").innerHTML = totalPrice;

		if (document.getElementById("flagDelivery")){
			document.getElementById("flagDelivery").value = flagDelivery;
		}

		if (flagBuy == "N"){
			if(flMsg == "Y") {
				// display message
				document.getElementById("response").innerHTML = "The item has been added to your basket";
			}
		}
		else {
			alert("The item has been added to your basket");
		}
	}
}