var req;//our request resource

function loadXMLDoc(url, filter) {
    req = false;
    
    // branch for native XMLHttpRequest object
    if(window.XMLHttpRequest) {
    	try {
			req = new XMLHttpRequest();
        } catch(e) {
			req = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
       	try {
        	req = new ActiveXObject("Msxml2.XMLHTTP");
      	} catch(e) {
        	try {
          		req = new ActiveXObject("Microsoft.XMLHTTP");
        	} catch(e) {
          		req = false;
        	}
		}
    }
	if(req) {
        //if is ok request the php file
		req.onreadystatechange = processReqChange;
		req.open("POST", url, true);
		req.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=Windows-1251");
		req.send(filter);
	}
}

function processReqChange() {
    //element = document.getElementById('status');
    //waiting the php
    if (req.readyState == 1) {
        document.getElementById('status').innerHTML = 'добавяне...';
    }
    //the XML is here
    if (req.readyState == 4) {
        if (req.status == 200) {
            document.getElementById('status').innerHTML = ' ';
	    print_result();
        } else {
        //fuck! some shit happened
            alert('error');
        }
    }
}

function order(what) {
    sid = getCookie('Order');
    document.getElementById('result').innerHTML = '';
    loadXMLDoc('addOrder.php', 'product='+what+'&count='+document.getElementById('prod'+what).value+'&sid='+sid);
}

function print_result() {

	var data = req.responseXML.getElementsByTagName("x");
	for(var a=0;a<data.length;a++)
	{
		document.getElementById('result').innerHTML += data.item(a).firstChild.nodeValue+'<br />';
	}
	document.getElementById('result').innerHTML += '<br />Общо: '+req.responseXML.getElementsByTagName("a").item(0).firstChild.nodeValue+' лв.<br /><br /><br /><a href="order1.php">поръчай</a>';
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=")
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1 
    c_end=document.cookie.indexOf(";",c_start)
    if (c_end==-1) c_end=document.cookie.length
    return unescape(document.cookie.substring(c_start,c_end))
    } 
  }
return ""
}