function addWord(number) {

         thisBody = number.parentNode.parentNode.parentNode;
         counter =thisBody.getElementsByTagName('tr').length + 1;

         if (thisBody.className == "visible") {
         counter =thisBody.getElementsByTagName('tr').length;
         }

         if (document.getElementById('newsletter')) {
         counter =thisBody.getElementsByTagName('tr').length + 1;
         }

         var newWord = document.getElementById('last_word_inv').cloneNode(true);
         newWord.id = '';
         newWord.className = 'visible';
         // newWord.getElementsByTagName('input')[0].value = "q" + thisBody.id + '_' + counter;
         newWord.getElementsByTagName('input')[0].name = "q" + thisBody.id + '_' + counter;

         var addWordLink = thisBody.getElementsByTagName('a')[0];
         newWord.getElementsByTagName('td')[1].appendChild(addWordLink);
         //przenieś link dodaj nowy rząd

         thisBody.appendChild(newWord);
}

//function initthis() {






//alert(addLetterNumber);
//}

//window.onload = initthis;



function addLetter() {

         // var number = document.getElementsByTagName('tbody').length;



         var table = document.getElementById('letters');
         var tbody = table.getElementsByTagName('tbody').length;

         var addLetterNumber = tbody - 2;

         var number = addLetterNumber;
         addLetterNumber++;

         var localNumber = 1;

         // document.getElementsByTagName('body')[0].style.background = 'red';
         var newLetter = document.getElementById('root').cloneNode(true);
         newLetter.id = number;
         newLetter.className = 'visible';
         newLetter.getElementsByTagName('td')[0].innerHTML += number;
         // newLetter.getElementsByTagName('input')[0].value = "q" + number + "_" + localNumber;
         newLetter.getElementsByTagName('input')[0].name = "q" + number + "_" + localNumber;
         newLetter.getElementsByTagName('input')[1].name = "freqq" + number;
         newLetter.getElementsByTagName('input')[2].name = "freqq" + number;
         newLetter.getElementsByTagName('input')[3].name = "freqq" + number;
         var insertHere = document.getElementById('letters');
         insertHere.appendChild(newLetter);
}