[HTML] pobierz, plaintext 
<td><input type="checkbox" class="activator"></td>
<td></td>
<td><input type="text" disabed="disabled" /></td>
[HTML] pobierz, plaintext 

[JAVASCRIPT] pobierz, plaintext 
$( window ).load(function() {
  $('.activator').each(function(index, item){
  	$(item).on('click', function(){
  		var t = $(this), input = $(this).closest('input[type=text]');
  		console.log($(input).data('next'));
  		console.log($(this).next('input[type=text]'));
  		if (t.is(':checked')) {
  			$(input).attr('disabled', '');
  		} else {
  			$(input).attr('disabled', 'disabled');
  		}
  	})
  });
});
[JAVASCRIPT] pobierz, plaintext 

[HTML] pobierz, plaintext 
$(input).removeAttr('disabled');
[HTML] pobierz, plaintext 

[HTML] pobierz, plaintext 
$(input).attr('disabled', '');
[HTML] pobierz, plaintext 

[JAVASCRIPT] pobierz, plaintext 
$('.activator').change(function(){
$(this).closest('tr').find('[type="text"]').prop('disabled',$(this).prop('checked'));
 
})
 
.change();
[JAVASCRIPT] pobierz, plaintext