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();

function styleload()
{
    var cookie = readCookie('style');
    var title  = (cookie) ? cookie : getPreferredStyleSheet();
    setActiveStyleSheet(title);
}
function styleunload()
{
    var title = getActiveStyleSheet();
    createCookie('style', title, 365);
}