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<script type="text/javascript">
        function createTr()
        {
                var tab = document.getElementById("t");
                //create tr
                for(var j=0;j<3;j++) {
                        var tr = tab.insertRow();
                        //create td
                                var td1 = tr.insertCell(0);
                                td1.innerHTML = "test"+j;
                                var td2 = tr.insertCell(1);
                                td2.innerHTML = "<input type='text' id='td_"+j+"' class='input' size='5' >";
   


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