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;
}



function createStyleCookie(title)
{
  createCookie("style", title, 1);
}

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.setAttribute("href", title+".css");
            createStyleCookie(title);
            break;
        }
    }
}

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

function getPreferredStyleSheet()
{
    return 'default';
}

function loadStyle()
{
    var cookie = readCookie("style");
    var title = cookie ? cookie : getPreferredStyleSheet();
    setActiveStyleSheet(title);
}


window.onload = function(e) {
  loadStyle();
}

/*window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createStyleCookie(title);
}
*/

loadStyle();