function popupImageNoscroll(src) {
    window.open('popup_image.html?picture=' + src,'','toolbar=no, scrollbars=no, location=no, directories=no, status=no, menubar=no, resizable=yes, width=250, height=250, top=10, left=10');
}
function popupImageScroll(src) {
    window.open('popup_image.html?picture=' + src,'','toolbar=no, scrollbars=yes, location=no, directories=no, status=no, menubar=no, resizable=yes, width=250, height=250, top=10, left=10');
}
function popupMidImage(src,  src_o) {
    window.open('popup_mid_image.html?picture=' + src + '&picture_o=' + src_o,'','toolbar=no, scrollbars=no, location=no, directories=no, status=no, menubar=no, resizable=yes, width=250, height=250, top=10, left=10');
}
function confirmLink(theLink, msg)
{
    // Confirmation is not required in the configuration file
    // or browser is Opera (crappy js implementation)
    if (msg == '' || typeof(window.opera) != 'undefined') {
        return true;
    }

    var is_confirmed = confirm( msg );
    if (is_confirmed) {
        theLink.href += '&is_js_confirmed=1';
    }

    return is_confirmed;
} // end of the 'confirmLink()' function