JavaScript Calling WebService by SOAP

<script type="text/javascript">
       
    function getXmlHttp() {
        var xmlHttp;
        if (window.XMLHttpRequest)
        { // code for IE7+, Firefox, Chrome, Opera, Safari
            xmlHttp = new XMLHttpRequest();
        }
        else
        { // code for IE6, IE5
            xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        return xmlHttp;
    }
       
    function RequestWebService() {
        
        //Webservice location
        var URL = "http://10.253.148.124:8080/OncallWebServer/services/OncallWebServer?wsdl";
        
        //Generate SOAP request
        var ptype = document.getElementById(‘ptype‘).value;
        var year = document.getElementById(‘year‘).value;
        var month = document.getElementById(‘month‘).value;
        var pday = document.getElementById(‘pday‘).value;
        var pchg = document.getElementById(‘pchg‘).value;
        var data;
        data = ‘<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:axis="http://ws.apache.org/axis2">‘;
        data = data + ‘<soap:Header/>‘;
        data = data + ‘<soap:Body>‘;
        data = data + ‘<axis:MessagePush>‘;
        data = data + ‘<axis:type>‘;
        data = data +  ptype;
        data = data + ‘</axis:type>‘;
        data = data + ‘<axis:year>‘;
        data = data +  year;
        data = data + ‘</axis:year>‘;
        data = data + ‘<axis:month>‘;
        data = data +  month;
        data = data + ‘</axis:month>‘;
        data = data + ‘<axis:day>‘;
        data = data +  pday;
        data = data + ‘</axis:day>‘;
        data = data + ‘<axis:change>‘;
        data = data +  pchg;
        data = data + ‘</axis:change>‘;
        data = data + ‘</axis:MessagePush>‘;
        data = data + ‘</soap:Body>‘;
        data = data + ‘</soap:Envelope>‘;
        
        var xmlHttp = getXmlHttp();
        xmlHttp.open(‘POST‘, URL, true);
        //xmlHttp.onreadystatechange=state_Change;
        xmlHttp.onreadystatechange = function () {
            if (xmlHttp.readyState == 4) {
                try {
                    if (xmlHttp.status == 200 && typeof (success) == ‘function‘) {
                        success(xmlHttp.responseText);
                    }
                    else if ((xmlHttp.status / 100 == 4 || xmlHttp.status / 100 == 5) && typeof (error) == ‘function‘) {
                        error(xmlHttp.responseText, xmlHttp.status);
                    }
                    else if (xmlHttp.status / 100 == 200 && typeof (complete) == ‘function‘) {
                        complete(xmlHttp.responseText, xmlHttp.status);
                    }
                    else if (typeof (failed) == ‘function‘) {
                        failed(xmlHttp.responseText, xmlHttp.status);
                    }
                }
                catch (e) {
                }
            }
        }
        xmlHttp.setRequestHeader("Content-Type", "application/soap+xml");
        xmlHttp.send(data);
        
        //Display reply message - file location (for testing)
        document.getElementById("data").innerHTML = xmlHttp.responseText;
        }
</script>