var pageNum = 0;
var rowsPerPage = 5;
function displayPage(page) {
    var start = 1 + (page * rowsPerPage);
    var rowCount = $('#agenda tbody tr').length;

    $("#agenda tbody tr").hide();

    for (var i = start; i < rowsPerPage + start; i++) {
        $("#agenda tbody tr:nth-child(" + i + ")").show();
    }

    if (page == 0) { $(".agendanav .prev").css('visibility','hidden') } else { $(".agendanav .prev").css('visibility','visible') };
    if (start + rowsPerPage > rowCount) { $(".agendanav .next").css('visibility', 'hidden') } else { $(".agendanav .next").css('visibility','visible') };
}

function nextPage() {
    pageNum++;
    displayPage(pageNum);
}
function previousPage() {
    pageNum--;
    displayPage(pageNum);
}

$(document).ready(function() {
    displayPage(pageNum);
    $(".agendanav .prev").click(function() {
        previousPage();
    });
    $(".agendanav .next").click(function() {
        nextPage();
    });
});