var http_request = false;
function makePOSTRequest(url, parameters) {
	http_request = false;
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
    http_request = new XMLHttpRequest();
    if (http_request.overrideMimeType) {
    	http_request.overrideMimeType('text/html');
    }
  } else if (window.ActiveXObject) { // IE
    try {
      http_request = new ActiveXObject("Msxml2.XMLHTTP");
    	} catch (e) {
      	try {
          http_request = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (e) {}
      }
  	}
    if (!http_request) {
      alert('Nepovedlo se navazat spojeni');
      return false;
  	}
//	http_request.onreadystatechange = alertContents;
    http_request.open('POST', url, true);
    http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http_request.setRequestHeader("Content-length", parameters.length);
    http_request.setRequestHeader("Connection", "close");
    http_request.send(parameters);
}


function get(pid) {
  var txtQty="qty_"+pid;
  var p="p_"+pid;

  var poststr =	"p=" + encodeURI( document.getElementById(p).value ) +
								"&txtQty=" + encodeURI( document.getElementById(txtQty).value ) +
                                "&addtokosik="+ 1;
  makePOSTRequest('./inc/cart-funkce.php', poststr);
  alert('Zboží bylo přidáno do košíku');
  location.reload(true);
}