function GetXmlHttpObject()
{
	var xmlHttp=null;
	try { xmlHttp=new XMLHttpRequest(); }
	catch (e)
	{ 
		try { xmlHttp=new ActiveXObject("Msxml2.XMLHTTP"); }
 		catch (e) { xmlHttp=new ActiveXObject("Microsoft.XMLHTTP"); }
 	}	
	return xmlHttp;
}

function addChart(param)
{
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
 	{
		alert ("Browser does not support HTTP Request")
 		return;
 	}
	var url = "http://www.purplerecordingstudio.com/include/addchart.php?k="+param;
	xmlHttp.open("GET",url,true);
	xmlHttp.onreadystatechange = function()
	{
		if(xmlHttp.readyState == 4 && xmlHttp.status == 200){ alert('Articolo aggiunto al carrello'); window.location.reload();}
	}
	xmlHttp.send(null);
}

function delChart(param)
{
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
 	{
		alert ("Browser does not support HTTP Request")
 		return;
 	}
	var url = "http://www.purplerecordingstudio.com/include/delchart.php?k="+param;
	xmlHttp.open("GET",url,true);
	xmlHttp.onreadystatechange = function()
	{
		if(xmlHttp.readyState == 4 && xmlHttp.status == 200) { window.location.reload(); }
	}
	xmlHttp.send(null);
}