[Steven_Kirke]

Всем добрый день.
Не могу понять почему не срабатывает выполнение действия по Id

<p>
<table>
    <tr><td id="question_text"></td></tr>
    <tr>
        <td id="answer_1"></td>
        <td id="answer_2"></td>
    </tr>
    <tr>
        <td id="answer_3"></td>
        <td id="answer_4" ></td>
    </tr>
</table>
</p>

<input type="button"  id=""  onclick="CreateIdInput();id_selecter()" value="">
<script>

    function CreateIdInput()
    {
        for(var i =1; i < 5; i++)
        {
            var td = document.getElementById("answer_" +i);
            var new_id ="<input type='button' id ='t"+i+"'  onclick='test_click()' value='t_"+i+"'>";
            td.innerHTML = new_id;
        }
    }
</script>
<script>
    function id_selecter()
    {
        var rand_select_computer = Math.floor(Math.random()*3);
        var arr_select_computer = [0, 1, 2, 3];
        var select_computer = arr_select_computer[rand_select_computer];
        if ( select_computer == 0)
        {
            alert("1")
            document.getElementById('t_1').style.display = "none";
        }
        else if (select_computer == 1)
        {
            alert("2")
            document.getElementById('t_2').style.display = "none";
        }
        else if (select_computer == 2)
        {
            alert("3")
            document.getElementById('t_3').style.display = "none";
        }
        else if (select_computer == 3)
        {
            alert("4")
            document.getElementById('t_4').style.display = "none";
        }
    }
    function test_click()
    {
        alert("work")
    }
</script>