$(document).ready(function () {
    //Default Action
    var currentDay = new Date().getDay();
    $(".tab_content").hide(); //Hide all content
    $("ul.tabs li.day" + (currentDay - 1)).addClass("active").show(); //Activate first tab
    $(".tab_content.day" + (currentDay - 1)).show(); //Show first tab content

    //On Click Event
    $("ul.tabs li").click(function () {
        $("ul.tabs li").removeClass("active"); //Remove any "active" class
        $(this).addClass("active"); //Add "active" class to selected tab
        $(".tab_content").hide(); //Hide all tab content
        var activeTab = $(this).find("a").attr("href"); //Find the rel attribute value to identify the active tab + content
        $(activeTab).fadeIn(); //Fade in the active content
        return false;
    });
});