function enter(s1,s2) {
 if (document.getElementById('lform').inickname.value == '') {
  alert(s1);
  document.getElementById('lform').inickname.focus();
  return;
 }
 if(document.getElementById('lform').ipassword2.value == '') {
  alert(s2);
  document.getElementById('lform').ipassword2.focus();
  return;
 }
document.getElementById('lform').ipassword.value = hex_sha1(document.getElementById('lform').ipassword2.value+document.getElementById('lform').hash.value );
document.getElementById('lform').ipassword2.value  = "";
document.getElementById('lform').submit();
}