/* 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);

/* 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('&nbsp;<img src="http://www.minoh-hp.jp/img/new.gif" alt="New!" class="new">');
}
/* new mark */
function NewMark2(y, m, d) {
    oldDay = new Date(y + "/" + m + "/" + d);
    newDay = new Date();
    n = (newDay - oldDay) / (1000 * 60 * 60 * 24);
    if (n <= 15)
        document.write('&nbsp;<img src="http://www.minoh-hp.jp/img/tp_l_new.gif" alt="New!" class="new">');
}

/* new mark */
function NewMark3(y, m, d) {
    oldDay = new Date(y + "/" + m + "/" + d);
    newDay = new Date();
    n = (newDay - oldDay) / (1000 * 60 * 60 * 24);
    if (n <= 15)
        document.write('&nbsp;<img src="http://www.minoh-hp.jp/img/r_new.jpg" style="vertical-align: middle;" alt="New!" class="new">');
}

/* back to top */
function backToTop() {
  var x1 = x2 = x3 = 0;
  var y1 = y2 = y3 = 0;
  if (document.documentElement) {
      x1 = document.documentElement.scrollLeft || 0;
      y1 = document.documentElement.scrollTop || 0;
  }
  if (document.body) {
      x2 = document.body.scrollLeft || 0;
      y2 = document.body.scrollTop || 0;
  }
  x3 = window.scrollX || 0;
  y3 = window.scrollY || 0;
  var x = Math.max(x1, Math.max(x2, x3));
  var y = Math.max(y1, Math.max(y2, y3));
  window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
  if (x > 0 || y > 0) {
      window.setTimeout("backToTop()", 25);
  }
}