$(document).ready(function() {
    var headers = $(".zc_scc");
    headers.each(function(){
        $(this).next().hide();
        
        $(this).click(function(){
            headers.each(function(){
                $(this).next().hide();
                $(this).children().children().next().next().next().attr("class", "zc_sc3");
            });
            
            $(this).next().show();
            $(this).children().children().next().next().next().attr("class", "zc_sc2");
        });
    });
    $(headers[0]).next().show();
});