function image_popup(image, width, height){

    win_width = width * 1.15;
    win_height = height * 1.15;

    var features =
        'width='        + win_width +
        ',height='      + win_height +
        ',location='    + 'no' +
        ',left='        + '5' +
        ',top='         + '5' +
        ',menubar='     + 'no' +
        ',scrollbars='  + 'no'+
        ',status='      + 'no' +
        ',toolbar='     + 'no'+
        ',resizable='   + 'yes';

    var url = "image_popup.php?image="+image+"&width="+width+"&height="+height;

    img_win=window.open(url, "img", features)

    if (window.focus) {img_win.focus()}

    return false;
}