var MyName = "",
    MyTwitterID = "recre8_jp",
    MyTweetNumber = 3,
    Tweet = '',
    TweetText = '',
    TextLength = 140,
    APIPath = "http://twitter.com/statuses/user_timeline/" + MyTwitterID + ".json?callback=twitterCallback&count=" + MyTweetNumber,
    script = document.createElement("script"),
    elemTwitterBox = document.getElementById("TwitterBox");
elemTwitterBox.innerHTML = MyName;
script.setAttribute("src", APIPath);
elemTwitterBox.appendChild(script);

function twitterCallback(obj){
for( i=0; i<MyTweetNumber && i<obj.length; i++ ){
if ( obj[i].text.length > TextLength ){
TweetText = obj[i].text.substr(0,TextLength) + "…";
}
else{
TweetText = obj[i].text;
};
TweetText = TweetText.replace(/(http:\/\/[\x21-\x7e]+)/gi, "<a href='$1'>$1</a>");
Tweet += '<li>' + TweetText + '</li>';
};
elemTwitterBox.innerHTML = "<ul>" + Tweet + "</ul>";
}