function wyczysc(pole) {
  var login = document.logowanie.login;
  var pass = document.logowanie.pass;
  if (pole == 'login' && login.value == 'login') {
    login.value = '';
    login.focus();
  }
  if (pole == 'pass' && pass.value == '********') {
    pass.value = '';
    pass.focus();
  }
 }
 
 function pusto(pole) {
  var login = document.logowanie.login;
  var pass = document.logowanie.pass;
  if (pole == 'login' && login.value == '') {
    login.value = 'login';
    login.blur();
  }
  if (pole == 'pass' && pass.value == '') {
    pass.value = '********';
    pass.blur();
  }
 }