new function(){
    
    var footerId = "footer_under_line";
    //メイン
    function footerFixed(){
        //ドキュメントの高さ
        var dh = document.getElementsByTagName("body")[0].clientHeight;
        //フッターのtopからの位置
        document.getElementById(footerId).style.top = "0px";
        var ft = document.getElementById(footerId).offsetTop;
        //フッターの高さ
        var fh = document.getElementById(footerId).offsetHeight;
        //ウィンドウの高さ
        if (window.innerHeight){
            var wh = window.innerHeight;
        }else if(document.documentElement && document.documentElement.clientHeight != 0){
            var wh = document.documentElement.clientHeight;
        } else if (document.body.clientHeight) {
            var wh = document.body.clientHeight;
        }
        if(ft+fh<wh){
            document.getElementById(footerId).style.position = "relative";
            document.getElementById(footerId).style.top = (wh-fh-ft-1)+"px";
        }
    }
    
    //文字サイズ
    function checkFontSize(func){
    
        //判定要素の追加    
        var e = document.createElement("div");
        var s = document.createTextNode("S");
        e.appendChild(s);
        e.style.visibility="hidden"
        e.style.position="absolute"
        e.style.top="0"
        document.body.appendChild(e);
        var defHeight = e.offsetHeight;
        
        //判定関数
        function checkBoxSize(){
            if(defHeight != e.offsetHeight){
                func();
                defHeight= e.offsetHeight;
            }
        }
        setInterval(checkBoxSize,1000)
    }
    
    //イベントリスナー
    function addEvent(elm,listener,fn){
        try{
            elm.addEventListener(listener,fn,false);
        }catch(e){
            elm.attachEvent("on"+listener,fn);
        }
    }

    addEvent(window,"load",footerFixed);
    addEvent(window,"load",function(){
        checkFontSize(footerFixed);
    });
    addEvent(window,"resize",footerFixed);
    
}