function HideContent(d) {
    if (d.length < 1) { return; }
    document.getElementById(d).style.display = "none";
}
function ShowContent(d) {
    if (d.length < 1) { return; }
    document.getElementById(d).style.display = "block";


}


function ReverseContentDisplay(d) {
    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"; }
}
function clearClass(active, deactive) {

    document.getElementById(active).className = "active";
    document.getElementById(deactive).className = "";

}
function deactiveClass(deactive, bookmark) {


    document.getElementById(deactive).className = "";
    document.getElementById(bookmark).style.display = "none";

}
function activeClass(active, bookmark) {

    document.getElementById(active).className = "active";
    document.getElementById(bookmark).style.display = "block";

}