// Source: http://scott.yang.id.au/2003/06/obfuscate-email-address-with-javascript-rot13/
Rot13 = {
    map: null,

    convert: function(a) {
        Rot13.init();

        var s = "";
        for (i=0; i < a.length; i++) {
            var b = a.charAt(i);
            s += ((b>='A' && b<='Z') || (b>='a' && b<='z') ? Rot13.map[b] : b);
        }
        return s;
    },

    init: function() {
        if (Rot13.map != null)
            return;
              
        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();

        Rot13.map = map;
    },

    write: function(a) {
        document.write(Rot13.convert(a));
    }
}

// Source: http://www.w3schools.com/JS/js_cookies.asp
function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? ";" : ";expires="+exdate.toGMTString()) +
";path=/"
;
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1;
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    }
  }
return "";
}