$(document).ready(
    function()
    {
        var timer;
        
        var wybraneOferty = $('.block5');
        if (wybraneOferty.length > 0)
        {                
            wybraneOferty.find('.numer').click(
                function()
                {                
                    clearTimeout(timer);
                    timer = setTimeout(next, 5000);
                    wybraneOferty.find('.selected').removeClass('selected');
                    $(this).addClass('selected');
                    
                    wybraneOferty.find('.zdjecie img').attr('src', $(this).attr('photo') );
                    wybraneOferty.find('.zdjecie').attr('href', $(this).attr('href'));
                
                    return false;
                }
            );
            
            var next;
            wybraneOferty.find('.next').click(
                next = function()
                {
                    var all = wybraneOferty.find('.numer');
                    var current = wybraneOferty.find('.selected');
                    var index = (all.index(current) + 1) % all.length;
                    all.eq(index).click();
                    return false;                                                                                
                }
            );
            
            wybraneOferty.find('.prev').click(
                function()
                {
                    var all = wybraneOferty.find('.numer');
                    var current = wybraneOferty.find('.selected');
                    var index = all.index(current) - 1;
                    if (index == -1)
                        index = all.length-1;
                    all.eq(index).click();
                    return false;                                                                                
                }
            );
            
            timer = setTimeout(next, 5000);            
        }
                              
    }
);