function createXMLHttpRequest(cbFunc)
{
    var XMLhttpObject = null;
    try{
        XMLhttpObject = new XMLHttpRequest();
    }catch(e){
        try{
            XMLhttpObject = new ActiveXObject("Msxml2.XMLHTTP");
        }catch(e){
            try{
                XMLhttpObject = new ActiveXObject("Microsoft.XMLHTTP");
            }catch(e){
                return null;
            }
        }
    }
    if (XMLhttpObject) XMLhttpObject.onreadystatechange = cbFunc;
    return XMLhttpObject;
}
function loadTextFile()
{
    httpObj = createXMLHttpRequest(displayData);
    if (httpObj)
    {
        httpObj.open("GET","http://www.zentaku.or.jp/news.php",true);
        httpObj.send(null);
    }
}
function displayData()
{
    if ((httpObj.readyState == 4) && (httpObj.status == 200))
    {
        document.getElementById("ext_news").innerHTML = httpObj.responseText;
    }else{
        document.getElementById("ext_news").innerHTML = "Loading...";
    }
}