function showFullSize(keyword)
{
    var url = "download.aspx?keyword=" + keyword;
    var name = "zoom";
    
    var width = 760;
    var height = 550;
    var top = (screen.width - width) / 2;
    var left = (screen.height - height) / 2;
    var features = "width=" + width + ",height=" + height + ",scrollbars=yes,resizable=yes,top=" + top + ",left=" + left;
    
    var popup = window.open(url, name, features);
    if (!popup)
    {
        alert("Pop-up window was blocked by your browser.");
    }
    else
    {
        popup.focus();
    }
}
function goTop()
{
    window.scrollTo(0, 0);
}