function getPDF(idPDF)
{
    var frame = document.getElementById("PDFContainer");
    frame.src = "News/PDF.aspx?idPdf=" + idPDF;
    $find("newsmodal").show();
}
function closePDF() {
    var frame = document.getElementById("PDFContainer");
    frame.src = "about:blank";
    $find("newsmodal").hide();
}