function mailtoemp(osoba)
{

mail = "";
at = "@"
part_1 = "mai";
part_2 = "lto:";

if (osoba=='ewantuch') { mail = "tawed"+at+"onet.pl"; }
else if (osoba=='pdudek') { mail = "pdudek"+at+"pk.edu.pl"; }
else if (osoba=='kczajkowski') { mail = "kc"+at+"pk.edu.pl"; }
else if (osoba=='tjarosz') { mail = "tj"+at+"cs.pk.edu.pl"; }
else if (osoba=='ekryza') { mail = "cs"+at+"pk.edu.pl"; }
else if (osoba=='admin') { mail = "kc"+at+"pk.edu.pl?subject=WWW E-64"; }

document.location.href=part_1+part_2+mail;

}