$(document).ready(function() {
    // store url for current page as global variable
    current_page = document.location.href
    // apply selected states depending on current page

    $("#HomeTab").addClass('selected');
    if (current_page.match(/your_needs/)) {
        $("#HomeTab").removeClass('selected');
        $("#YourNeedsTab").addClass('selected');
    } else if (current_page.match(/your_needs/)) {
        $("#HomeTab").removeClass('selected');
        $("#YourNeedsTab").addClass('selected');
    } else if (current_page.match(/about_us/)) {
        $("#HomeTab").removeClass('selected');
        $("#AboutTab").addClass('selected');
    } else if (current_page.match(/join_us/)) {
        $("#HomeTab").removeClass('selected');
        $("#JoinTab").addClass('selected');
    }
});