var host = window.location.host;

if (window.Prototype)
{
    Event.observe(document, 'mouseup', function (e)
    {
        if (window.pageTracker == null)
            return;

        var link = Event.findElement(e, 'a');

        // Log all left and middle clicks on HTTP/HTTPS links. The logged URL is always relative to the root.

        if (link && link.href && startsWith(link.href, 'http') && (Event.isLeftClick(e) || Event.isMiddleClick(e)))
        {
            var url = link.href.replace(new RegExp('^https?://'), ''); // Strip protocol

            if (startsWith(url, host))
            {
                // Internal link - strip the hostname and add the link name, if any
                url = url.substr(host.length);
                url = addNameAttribute(url, link);
            }
            else
            {
                url = '/outgoing/' + url; // External link
            }

            

            pageTracker._trackPageview(url);

            e.stop();
        }
    });
}

var addNameAttribute = function(url, link)
{
    if (link.name && link.name != '')
        return url + (url.indexOf('?') == -1 ? '?' : '&') + 'trigger=' + link.name;
    else    
        return url;
}

var startsWith = function(string, substring)
{
    if (string.length == 0 || string.length < substring.length) 
        return false;
    return (string.substr(0, substring.length) == substring);
}