//Show loading image when RSS is updating
function rssShowLoading(divRssItemsID)
{
    var divItems = $("#" + divRssItemsID);
    var divLoaded = $("div.loaded", divItems);
    var divLoading = $("div.loading", divItems);
    var itemsHeight = divItems.height() + "px";

    divLoaded.hide();
    divLoading.show();
    divLoading.css("height", itemsHeight).css("line-height", itemsHeight);
}