$(document).ready(function(){

    // slide everything open on new page

    $(".outline:hidden").slideToggle("slow", function(){

        $(".percent:hidden").fadeIn("slow");

    });

    // re-activate links (the event is stomped on by the li event)

    $(".outline a").click(function(){ window.location.href = this });

    // highlight clicked items

    $("li").not("[ul]").click(function(){ $(this).toggleClass("selected") });

    // add line numbers

    var line_counter = 0;

    $("li").each(function(){

        var str = '<span class="linenum">' + ++line_counter + ':</span>';

        $(this).prepend(str);

    });

    // attach folds

    $(".outline ul li").toggle(

        // hide

        function(){

            if ( $(this).children("ul").size() == 0 ) return;

            $(this).children("ul").slideUp("slow");

            $(this).find(".linenum").addClass("linenum-folded");

        },

        // show

        function(){

            $(this).children("ul").slideDown("slow");

            $(this).find(".linenum").removeClass("linenum-folded");

        }

    );

});