jScrollPane滚动条

$(function(){
    var settings = {
        showArrows: true,
        autoReinitialise: true
    };
    var pane = $('.scroll-pane')
    pane.jScrollPane(settings);
    var api = pane.data('jsp');
    var contentPane = api.getContentPane();
    var i = 1;

    setInterval(
        function()
        {
            contentPane.append(
                $('<p />').text('This is paragraph number ' + i++)
                );
            api.reinitialise();  
            api.scrollToBottom(); 
        },
        1000
        );
});