function validForm(fr) {
if (fr.nomen.value=="") {window.alert("You didn'd specidy Your name!"); fr.nomen.focus(); return false;
}
if (fr.email.value=="") {window.alert("Specify Your e-mail!"); fr.email.focus(); return false;
}
if (fr.zipcode.value=="") {window.alert("Specify Your postal [zip] code!"); fr.zipcode.focus(); return false;
}
if (fr.address.value=="") {window.alert("Specify Your mailing [delivery] address!"); fr.address.focus(); return false;
}
if ((fr.engbooks.value=="")&&(fr.rusbooks.value=="")) {window.alert ("Specify the amount of books!"); fr.engbooks.focus(); return false;
}
else {return true;
}
}