var query = null;


function add_goods(id_goods)
{
	query = null;
		
	if(window.XMLHttpRequest) 
	{
		query = new XMLHttpRequest();
	}
	
	if(window.ActiveXObject)  
	{
		query = new ActiveXObject('Microsoft.XMLHTTP');
	}
	
	query.onreadystatechange 	= success_add;	
	params 						= "g=" + id_goods;
			 
	////alert(params);
	query.open("POST","goods_add.php",true);
	query.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	query.send(params);
}

function success_add()
{
	//alert(query.responseText);	
	if ( query.readyState == 4 )
    {
		//alert((cquery.responseText == "error")); 
		if ( query.responseText == "error" )
		{
			alert("Неизвестная ошибка! Невозможно добавить товар в корзину!");
		}
		else
		{
			$("#count_goods").text("В корзине товаров " + query.responseText);
		}
	}
}


function del_goods(id_goods, itm)
{
	query = null;
		
	if(window.XMLHttpRequest) 
	{
		query = new XMLHttpRequest();
	}
	
	if(window.ActiveXObject)  
	{
		query = new ActiveXObject('Microsoft.XMLHTTP');
	}
	
	query.onreadystatechange 	= success_del;	
	params 						= "g=" + id_goods + "&i=" + itm;
			 
	////alert(params);
	query.open("POST","goods_del.php",true);
	query.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	query.send(params);
}

function success_del()
{
	//alert(query.responseText);	
	if ( query.readyState == 4 )
    {
		//alert((cquery.responseText == "error")); 
		if ( query.responseText == "error" )
		{
			alert("Неизвестная ошибка! Невозможно удалить товар из корзины!");
		}
		else
		{
			window.location = "order.php";
		}
	}
}


function reCalc()
{
	var sum 	= 0;
	var arr_c 	= $("input[name^='count_g']");
	var arr_p 	= $("input[name^='price_g']");
	
	for (i = 0; i < arr_c.length; i++)
	{
		sum += (arr_c[i].value * arr_p[i].value);
	} 
	
	$("#sum").val(sum);
}