$(document).ready(
    function()
    {
        var name = "";
        
        $("span.open-cont a").click(
            function()
            {
                var container = $(this).parent("span").parent("li").find("div.desc-cont");
                
                if(container.attr("class") == "desc-cont")
                {
                    container.slideToggle();
                
                    if($(this).html() != "свернуть")
                    {
                        name = $(this).html();
                        $(this).html("свернуть");
                    }
                    else
                    {
                        $(this).html(name);
                    }
                }
                
                
            }
        );
    }
);