function rot13init()
{
    var map = new Array();
    var s = "abcdefghijklmnopqrstuvwxyz";

    for (i = 0; i < s.length; i++)
    {
        map[s.charAt(i)] = s.charAt((i + 13) % 26);
    }

    for (i = 0; i < s.length; i++)
    {
        map[s.charAt(i).toUpperCase()]= s.charAt((i + 13) % 26).toUpperCase();
    }

    return map;
}

function rot13(a)
{
    if (typeof rot13map == 'undefined')
    {
        rot13map = rot13init();
    }

    s = "";

    for (i=0; i<a.length; i++)
    {
        var b = a.charAt(i);

        s += (b >= 'A'&& b <= 'Z' || b >= 'a' && b <= 'z' ? rot13map[b] : b);
    }

    return s;
}

function m_u(m_url, blank)
{
    if (blank)
    {
        window.open(rot13(m_url), '_blank');
    }
    else
    {
        window.location.href = rot13(m_url);
    }
}