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 null;
}        
var wuzLogPrefix = "/wuzlog/";
var loginCookie = getCookie( "WUZ-Login" );    
function setMenu() {
  if (loginCookie == null) {
      document.getElementById( "nav-schrijfnu" ).style.display = "none";
      document.getElementById( "nav-loguit" ).style.display = "none";
  } else {
      document.getElementById( "nav-login" ).style.display = "none";
      document.getElementById( "nav-registreer" ).style.display = "none";
      var alias = loginCookie.substring( 6, loginCookie.length );
      document.getElementById( "nav-mijn-href" ).setAttribute( "href", wuzLogPrefix + alias );
  } 
}