function toggleTabs(selectedItem) {

    var navigationItems = document.getElementById("tabbedNavigation").getElementsByTagName("li");
    var tabContent = document.getElementById("tabContent");
    var itemId = selectedItem.innerHTML.replace(/ /g,"").toLowerCase();
    tabContent.innerHTML = document.getElementById(itemId).innerHTML;
    
    for(i = 0; i < navigationItems.length; i++) {
        navigationItems[i].getElementsByTagName("a")[0].className = "";
    }
    selectedItem.className = "active";
}