var vis = 0;
function trolley()
{

  if (vis==0)
  {
    document.getElementById("trolley_div").style.display = "block";
    vis = 1;
  }
  
  else
  {
    document.getElementById("trolley_div").style.display = "none";
    vis = 0;
  }
  
}


function trolley_inc()
{
	var amt = parseInt(document.getElementById("trolley_amount").innerHTML);
	amt++;
	document.getElementById("trolley_amount").innerHTML = amt;
}

function trolley_dec()
{
	var amt = parseInt(document.getElementById("trolley_amount").innerHTML);
	amt--;
	document.getElementById("trolley_amount").innerHTML = amt;
}





	function dodaj()
	{
	

	var produkt = document.getElementById('produkt').innerHTML;
	var cena = document.getElementById('cena').innerHTML;
	var waga = document.getElementById('waga').value;
	
	
	if (window.XMLHttpRequest) 
	{
		req = new XMLHttpRequest();
	}

	else if (window.ActiveXObject) 
	{
		req = new ActiveXObject("Microsoft.XMLHTTP");
	}

	var url = "ajax/dodaj.php";
	var params = "produkt="+produkt+"&cena="+cena+"&waga="+waga;
	
	req.open("POST", url, true);
	req.setRequestHeader("Content-length", params.length);
	req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");	
	
	req.onreadystatechange = function()
	{
		if (req.readyState == 4)
		{

			var result = req.responseText;
				
			function mycallbackfunc()
			{
				trolley_inc();
				reload_trolley();
			}
				
			try
			{
				$.prompt(result,{ callback: mycallbackfunc });
				$("#trolley").load("./inc/koszyk.php");
			}
			catch(e)
			{
				alert(e.message);
			}
		}		
	}
	req.send(params);

}

function usun(id)
{	
	if(id>=0)
	{

		if (window.XMLHttpRequest) 
		{
			req = new XMLHttpRequest();
		}

		else if (window.ActiveXObject) 
		{
			req = new ActiveXObject("Microsoft.XMLHTTP");
		}

		req.open("GET", "ajax/usun.php?order_id="+id);
		req.onreadystatechange = function()
		{
			if (req.readyState == 4)
			{
				function mycallbackfunc()
				{
					var table = document.getElementById('trolley_table');
					trolley_dec();
					reload_trolley();
				}

				$.prompt(req.responseText,{ callback: mycallbackfunc });
			}		
		}
		req.send(null);
	}
}

function reload_trolley() 
{
	$("#trolley_div").load("./inc/koszyk.php?id="+Math.floor(Math.random() * 1000000));
}