/* style switch */
function setActiveStyleSheet(title) {
    var i,
    a,
    main;
    for (i = 0; (a = document.getElementsByTagName("link")[i]); i ++ ) {
        if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
            a.disabled = true;
            if (a.getAttribute("title") == title)
                a.disabled = false;
        }
    }
}

function getActiveStyleSheet() {
    var i,
    a;
    for (i = 0; (a = document.getElementsByTagName("link")[i]); i ++ ) {
        if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled)
            return a.getAttribute("title");
    }
    return null;
}

function getPreferredStyleSheet() {
    var i,
    a;
    for (i = 0; (a = document.getElementsByTagName("link")[i]); i ++ ) {
        if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title"))
            return a.getAttribute("title");
    }
    return null;
}

function createCookie(name, value, days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        var expires = "; expires=" + date.toGMTString();
    } else expires = "";
    document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i ++ ) {
        var c = ca[i];
        while (c.charAt(0) == ' ')
            c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) == 0)
            return c.substring(nameEQ.length, c.length);
    }
    return null;
}

window.onload = function(e) {
    var cookie = readCookie("style");
    var title = cookie ? cookie: getPreferredStyleSheet();
    setActiveStyleSheet(title);
}

window.onunload = function(e) {
    var title = getActiveStyleSheet();
    createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie: getPreferredStyleSheet();
setActiveStyleSheet(title);


/* link labeling */
/*
var yourURL = "http://www.minoh-hp.jp/";
function fileLinks() {
    var fileLink;
    if (document.getElementsByTagName('a')) {
        for (var i = 0; (fileLink = document.getElementsByTagName('a')[i]); i ++ ) {
            if (fileLink.href.indexOf('.pdf') != -1) {
                fileLink.setAttribute('target', '_blank');
                fileLink.className = 'pdfLink';
            }
            if (fileLink.href.indexOf(yourURL) == -1) {
                fileLink.setAttribute('target', '_blank');
                fileLink.className = 'external';
            }
        }
    }
}
window.onload = function() {
    fileLinks();
}
*/


/* new mark */
function NewMark(y, m, d) {
    oldDay = new Date(y + "/" + m + "/" + d);
    newDay = new Date();
    n = (newDay - oldDay) / (1000 * 60 * 60 * 24);
    if (n <= 15)
        document.write('<img src="http://www.minoh-hp.jp/img/new.gif" alt="New!" class="new">');
}