//-------------------Gör AJAX-förfrågan-----------------------------------------

            var http_request = false;
            var svar=0
            function makeRequest(url) {
                http_request = false;
                if (window.XMLHttpRequest) { // Mozilla, Safari,...
                    http_request = new XMLHttpRequest();
                    if (http_request.overrideMimeType) {
                        http_request.overrideMimeType('text/xml');
                    }
                } 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('Avbrott :( Kan inte skapa en XMLHTTP instans');
                    return false;
                }

                http_request.onreadystatechange = alertContents;

                http_request.open('GET', url, false);
                http_request.setRequestHeader("Content-type", "application/xml");
                http_request.send(null);
            }

            function alertContents() {
                if (http_request.readyState == 4) {
                    if (http_request.status == 200) {
                      svar = http_request.responseText;
                      return svar;
                    }
                    else {
                        alert('Frågan kunde inte exekveras.');
                    }
                }
            }