function toggleExpandCollapse(n) {
    var elm = document.getElementById('expandee' + n);
    if (elm) {
        if (elm.style.display == 'block') {
            collapse(n);
        }
        else {
            expand(n);
        }
    }
}

function expand(n) {
    showElm("expandee" + n);
    hideElm("expander" + n);


}

function collapse(n) {
    showElm("expander" + n);
    hideElm("expandee" + n);


}

function showElm(name) {
  var elm = document.getElementById(name);
  if (elm) { elm.style.display = "block"; }
}

function hideElm(name) {
  var elm = document.getElementById(name);
  if (elm) { elm.style.display = "none"; }
}


function showVideo(n, videoId, seconds)
{
    expand(n);
    var elm = document.getElementById("expandee" + n);
    var startParam = seconds != 0 ? '&start=' + Math.floor(seconds) : '';
    var startParamUrl = '';
    if (seconds != 0) {
        if (seconds > 60) {
            startParamUrl = '#t=' + Math.floor(seconds / 60) + 'm' + Math.floor(seconds % 60) + 's';
        }
        else {
            startParamUrl = '#t=' + Math.floor(seconds) + 's';
        }
    }

    if (elm) {
        elm.innerHTML = "<p align=\"right\"><a href=\"javascript:hideVideo(" + n + ")\">Zamknij</a>&nbsp;&nbsp;&nbsp;&nbsp;</p>" +
                "<center><object style=\"width: 425px; height: 344px\"><param name=\"movie\" " +
                "value=\"http://www.youtube.com/v/" + videoId + "&amp;autoplay=1" + startParam + "\"></param>" +
                "<embed src=\"http://www.youtube.com/v/" + videoId + "&amp;autoplay=1" + startParam + "\" type=\"application/x-shockwave-flash\" " +
                "style=\"width: 425px; height: 344px\"></object></center>";
    }
}


function hideVideo(n)
{
    var elm = document.getElementById("expandee" + n);
    if (elm) {
        elm.innerHTML = "&nbsp;";
    }
    collapse(n);
}