Default text in text_fields and password_fields

$(document).ready(function(){
  $('#password-clear').show();
  $('#password-password').hide();

  $('#password-clear').focus(function() {
      $('#password-clear').hide();
      $('#password-password').show();
      $('#password-password').focus();
  });
  $('#password-password').blur(function() {
      if($('#password-password').val() == '') {
          $('#password-clear').show();
          $('#password-password').hide();
      }
  });
  
  $('.default-value').each(function() {
      var default_value = this.value;
      $(this).focus(function() {
          if(this.value == default_value) {
              this.value = '';
          }
      });
      $(this).blur(function() {
          if(this.value == '') {
              this.value = default_value;
          }
      });
  });
})