function rotate_aboutgta() {
    document.getElementById('aboutgta_button').src = 'images/aboutgta_button_white.gif';
    document.getElementById ('divider_1').src = 'images/white_box.gif';
}

function rotate_courses() {
    document.getElementById('courses_button').src = 'images/courses_button_white.gif';
    document.getElementById ('divider_1').src = 'images/white_box.gif';
    document.getElementById('divider_2').src = 'images/white_box.gif';
    document.getElementById('subnav').innerHTML = '<a href="calendar.aspx">Calendar of Events</a>&nbsp;&nbsp;|&nbsp;&nbsp;<a href="courses.aspx">Courses</a>&nbsp;&nbsp;|&nbsp;&nbsp;<a href="faculty.aspx">Faculty</a>';
    
}
function rotate_coursedetail() {
    document.getElementById('courses_button').src = 'images/courses_button_white.gif';
    document.getElementById ('divider_1').src = 'images/white_box.gif';
    document.getElementById('divider_2').src = 'images/white_box.gif';
    
}
function rotate_book_store() {
    document.getElementById('book_store_button').src = 'images/book_store_button_white.gif';
    document.getElementById ('divider_2').src = 'images/white_box.gif';
    document.getElementById ('divider_3').src = 'images/white_box.gif';
}

function rotate_view_cart() {
    document.getElementById('view_cart_button').src = 'images/view_cart_button_white.gif';
    document.getElementById ('divider_3').src = 'images/white_box.gif';
    document.getElementById ('divider_4').src = 'images/white_box.gif';
}

function rotate_onsitetraining() {
    document.getElementById('onsite_training_button').src = 'images/onsite_training_white.gif';
    document.getElementById ('divider_4').src = 'images/white_box.gif';
    document.getElementById ('divider_5').src = 'images/white_box.gif';
}

function rotate_contactus() {
    document.getElementById('contactus_button').src = 'images/contact_us_white.gif';
    document.getElementById ('divider_5').src = 'images/white_box.gif';
}

function rotate_webinars() {
    document.getElementById('webinars_button').src = 'images/webinars_button_white.gif';
    document.getElementById('divider_5').src = 'images/white_box.gif';
}