function pageTopScroll() {  // トップへ戻るのスクロール
    var scrj = 1;
    var scdist = document.body.parentNode.scrollTop;
    if (scrj < 50 && scdist) {
        scdist = (scdist > 2) ? Math.ceil(scdist * .2) : 1;
        scrj++;
        scrollBy(0, -scdist);
        setTimeout("pageTopScroll()", 20);
    } else {
        scrollTo(0, 0);
        scrj = 1;
    }
}
function MM_swapImgRestore() { //v3.0
    var i, x, a = document.MM_sr; for (i = 0; a && i < a.length && (x = a[i]) && x.oSrc; i++) x.src = x.oSrc;
}

function MM_preloadImages() { //v3.0
    var d = document; if (d.images) {
        if (!d.MM_p) d.MM_p = new Array();
        var i, j = d.MM_p.length, a = MM_preloadImages.arguments; for (i = 0; i < a.length; i++)
            if (a[i].indexOf("#") != 0) { d.MM_p[j] = new Image; d.MM_p[j++].src = a[i]; } 
    }
}

function MM_findObj(n, d) { //v4.01
    var p, i, x; if (!d) d = document; if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
        d = parent.frames[n.substring(p + 1)].document; n = n.substring(0, p);
    }
    if (!(x = d[n]) && d.all) x = d.all[n]; for (i = 0; !x && i < d.forms.length; i++) x = d.forms[i][n];
    for (i = 0; !x && d.layers && i < d.layers.length; i++) x = MM_findObj(n, d.layers[i].document);
    if (!x && d.getElementById) x = d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
    var i, j = 0, x, a = MM_swapImage.arguments; document.MM_sr = new Array; for (i = 0; i < (a.length - 2); i += 3)
        if ((x = MM_findObj(a[i])) != null) { document.MM_sr[j++] = x; if (!x.oSrc) x.oSrc = x.src; x.src = a[i + 2]; }
}
function change(mySrc) {
    document.gifu_map.src = mySrc;
}

function init() {
    if (!document.getElementsByTagName) { return; }
    var objs = document.getElementsByTagName("div");
    for (i = 0; i < objs.length; i++) {
        if (objs[i].className == "titem") {
            objs[i].style.display = "none";
        }
    }
}

function Show() { // フォーム入力案内を表示
    document.getElementById("experience2").disabled = false;
}
function Hide() { // フォーム入力案内を表示
    document.getElementById("experience2").disabled = true;
}

function ShowFormGuide(obj, GuideSentence) { // フォーム入力案内を表示
    if (obj.value == '') {
        obj.value = GuideSentence;
        obj.style.color = '#999999';
    }
}
function HideFormGuide(obj, GuideSentence) { // フォーム入力案内を消す
    if (obj.value == GuideSentence) {
        obj.value = '';
        obj.style.color = '#333333';
    }
}

// Textボックス内でEnterキーを押下時に反応する既定のSubmitボタンを確実にする
function SetFocusAndClickSubmit(keyCode, submitName) {
    if (keyCode == 13) {
        var submit = document.getElementById(submitName);
        submit.focus();
        submit.click();
    }
}

//メニューにselected classをつける
function highlightpage() {
    if (!document.getElementsByTagName) return false;
    if (!document.getElementById) return false;
    if (!document.getElementById("head_menu")) return false;
    var nav = document.getElementById("head_menu");
    var links = nav.getElementsByTagName("a");
    for (var i = 0; i < links.length; i++) {
        var linkurl = links[i].getAttribute("href");
        var currenturl = window.location.href;
        if (currenturl.indexOf(linkurl) != -1) {
            links[i].parentNode.className = "selected left";           
        }
    }
}

//画像切替
function changeImage(id, path) {
    document.getElementById(id).src = path;
}