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function bookmark()
{
  var Netscape, MSIE, Opera;
  MSIE = navigator.appName == "Microsoft Internet Explorer";
  Netscape = navigator.appName == "Netscape";
  Opera = navigator.userAgent.indexOf("Opera") > -1;
  if (MSIE) { window.external.AddFavorite(location.href, document.title); };
  if (Netscape) { alert("Press Ctrl+D for bookmark"); };
  if (Opera) { alert("Press Ctrl+T for bookmark"); };
};
function valid_search()
{
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  { alert('Searched word(s) must have between 4 and 30 characters!'); search_form.search.focus(); return false; };
};
//-->