function displayItem(id) {
    var hideItemSelected = document.getElementById("item-selection-" + selectedInfo);
    hideItemSelected.className = "selectable";
    var hideSelectedInfo = document.getElementById("item-content-" + selectedInfo);
    hideSelectedInfo.className = "item-content-off";
    selectedInfo = id;
    var showNavSelected = document.getElementById("item-selection-" + selectedInfo);
    showNavSelected.className = " active";
    var showSelectedInfo = document.getElementById("item-content-" + id);
    showSelectedInfo.className = "item-content-on";
}