function zkontroluj_email(adresa) {
re = /^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$/;
return adresa.search(re) == 0;
}

function sinfo(domena) {
if (domena=='cz') { alert("Uloženo, odesláno"); } else { alert("Submitted"); }
}

function check_feedback(domena) {
var write="";
// cz
if (document.skiform.fullname.value=='' && domena=='cz') { write+="zadejte jméno\n"; }
if (document.skiform.email.value=='' && domena=='cz') { write+="zadejte email\n"; }
if (document.skiform.code.value=='' && domena=='cz') { write+="zadejte kontrolní kod\n"; }
if (!zkontroluj_email(document.skiform.email.value) && domena=='cz') { write+="špatný formát emailu\n"; }

// com
if (document.skiform.fullname.value=='' && domena=='com') {  write+="missing name\n"; }
if (document.skiform.email.value=='' && domena=='com') {  write+="missing email\n"; }
if (document.skiform.code.value=='' && domena=='com') {  write+="missing confirmation code\n"; }
if (!zkontroluj_email(document.skiform.email.value) && domena=='com') { write+="wrong email format\n"; }

if (write!='')
{
if (domena=='cz') { alert ("Chybějící údaje\n\n" + write); } else { alert ("Errors encountered\n\n" + write); }
}
else
{
sinfo(domena);
document.skiform.submit();
}
}

function bookmarksite(title, url){
if (document.all)
window.external.AddFavorite(url, title);
else if (window.sidebar)
window.sidebar.addPanel(title, url, "")
}