// JavaScript Document



function xmlhttpPost(strURL) {

    var xmlHttpReq = false;

    var self = this;

    // Mozilla/Safari

    if (window.XMLHttpRequest) {

        self.xmlHttpReq = new XMLHttpRequest();

    }

    // IE

    else if (window.ActiveXObject) {

        self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");

    }

    self.xmlHttpReq.open('POST', strURL, true);

    self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

    self.xmlHttpReq.onreadystatechange = function() {

        if (self.xmlHttpReq.readyState == 4) {

            updatepage(self.xmlHttpReq.responseText);

        }

    }

    self.xmlHttpReq.send(getquerystring());

}



function getquerystring() {

    var form = document.forms['f1'];

    var username = form.username.value;

    qstr = 'w=' + escape(username);  // NOTE: no '?' before querystring

    return qstr;

}



function updatepage(str){

    document.getElementById("result").innerHTML = str;

}