window.onload = init;

function init() {
    determineNavPosition();
}

function determineNavPosition() {

    var uri = getUri();
    var folder = getFolder();

    if (uri == '/index.html') {
        setSelectedNav('navItemHome');

    } else if (folder == 'profile') {
        setSelectedNav('navItemChallenge');

    } else if (uri == '/about.html') {
        setSelectedNav('navItemAbout');

    } else if (folder == 'well-being') {
        setSelectedNav('navItemWellBeing');

    } else if (uri == '/other-offers.html') {
        setSelectedNav('navItemOtherOffers');

    }  else if (folder == 'taf') {
        setSelectedNav('navItemTellAFriend');

    } else if (uri == '/testimonials.html') {
        setSelectedNav('navItemTestimonials');

    } else if (folder == 'contactus') {
        setSelectedNav('navItemContactUs');

    }

}

function setSelectedNav(navItem) {
    document.getElementById(navItem).className = "selected";
}

function getUri(url) {
			
    if (!url) url = location.href;
    
    var _uri = url.substr(url.indexOf(document.domain) + document.domain.length, url.length);

    if (_uri.indexOf("?") > -1) _uri = _uri.substr(0, _uri.indexOf("?"));

    if (_uri.charAt(_uri.length-1) == "/" || _uri == "") _uri += "index.html";

    if (_uri.indexOf("#") > -1) _uri = _uri.substr(0, _uri.indexOf("#"));

    return _uri;

}
		
function getFolder(uri) {
			
    if (!uri) uri = getUri();
    
    return uri.substr(1, uri.substr(1, uri.length).indexOf("/"));
    
}