function popup_video(id) {
        window.open('/pop_video.php3?id='+id, 'popup_video', 'width=540,height=425');
}
function popup_video_large(id) {
        window.open('/pop_video.php3?id='+id, 'popup_video', 'width=660,height=605');
}
function popup_image(id, height) {
        window.open('/pop_image.php3?id='+id, 'popup_image', 'scrollbars=yes,width=420,height='+height);
}
function popup_audio(id) {
        window.open('/pop_audio.php3?id='+id, 'popup_audio', 'width=375,height=160');
}
function popup_pdf(url_document) {
        window.open(url_document, 'popup_pdf', 'scrollbars,resizable,width=640,height=480');
}
function popup_print(url) {
        window.open(url, 'popup_print', 'scrollbars,resizable,width=580,height=700');
}