function defaultpopup(mylink, windowname) {
    if (! window.focus)return true;
    var href;
    if (typeof(mylink) == 'string')
       href=mylink;
    else
       href=mylink.href;
    window.open(href, windowname, 'width=800,height=600,scrollbars=yes');
    return false;
  }
function navigationpopup(mylink, windowname) {
    if (! window.focus)return true;
    var href;
    if (typeof(mylink) == 'string')
       href=mylink;
    else
       href=mylink.href;
    window.open(href, windowname, 'width=800,height=600,scrollbars=yes,toolbar=yes');
    return false;
  }