function HideContent(d) {
    if(d.length < 1) { return; }
    element = document.getElementById(d);
    if (element) {
      element.style.display = "none";
    } else {
      // alert(d + ' missing');
    }
}
function ShowContent(d) {
    if(d.length < 1) { return; }
    element = document.getElementById(d);
    if (element) {
      element.style.display = "block";
    }
}
function ReverseContentDisplay(d,url) {
    if(d.length < 1) { return; }
    if(document.getElementById(d).style.display == "none") { document.getElementById(d).style.display = "block"; }
    else { document.getElementById(d).style.display = "none"; }
    // Mikael 5.11.2008
    if (url) window.location = url;
}