version = navigator.appVersion.toLowerCase();
agent = navigator.userAgent.toLowerCase();
ie = (version.indexOf('msie')>-1);
win = (version.indexOf('windows')>-1);
opera = (agent.indexOf('opera')>-1);

function prn() {
document.write(' | \074a href=\"javascript:goprn();\"\076vytisknout\074/a\076');
}
function prnen() {
document.write(' | \074a href=\"javascript:goprn();\"\076print\074/a\076');
}
function goprn() {
window.print();
}
function fav() {
if ((opera) && (win)) return false;
else if ((ie) && (win)) document.write(' | \074a href=\"javascript:gofav();\"\076přidat k oblíbeným\074/a\076');
}
function faven() {
if ((opera) && (win)) return false;
else if ((ie) && (win)) document.write(' | \074a href=\"javascript:gofav();\"\076add to bookmarks\074/a\076');
}
function gofav() {
window.external.addFavorite('http://www.humboldtec.cz/','HumboldTec - vývoj, prodej a servis hardware, software, sítí a www-aplikací');
}
function gofaven() {
window.external.addFavorite('http://www.humboldtec.cz/en/','HumboldTec - development, sale, service of servis hardware, software, networks and web-aplications');
}

var WindowObjectReference = null; // global variable

function openRequestedPopup(strUrl, strWindowName, strParams)
{
  if(WindowObjectReference == null || WindowObjectReference.closed)
  {
    WindowObjectReference = window.open(strUrl, strWindowName, strParams);
  }
  else
  {
    WindowObjectReference.focus();
  };
}