function imagePopup(heading) {
    var url = '/imagepopup.php?heading=' + heading;
    for (var i = 1; i < arguments.length; i++) {
        url = url + '&src[]=' + arguments[i];
    }
    window.status = 'Opening image window...';
    var popup = window.open(url, 'imagepopup',
                'toolbar=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=250,height=250');
    popup.focus();
    window.status = '';
}