$(document).ready(function () {
    var randomNumber = Math.floor(Math.random() * 5);
    $('#splash').css('background-image', 'url(/content/images/photos/img_05_' + randomNumber + '.jpg)');

    var currentURL = window.location.pathname.toLowerCase();
    $('#menu ul li').each(function (index) {
        var text = $(this).find('a').attr('href');
        if (currentURL.indexOf(text) != -1)
            $(this).addClass('current_page_item');
        else
            $(this).removeClass('current_page_item');
    });
});