y me ayude… con este codigo?
<html>
<HEAD>
<script language="javascript">
function addRow(tableID) {
var table = document.getElementById(tableID);
//var indice = document.fomulario.acuerdo.selectedIndex
// var valor=document.fomulario.acuerdo[indice].value
var texto= document.fomulario.acuerdo[indice].text
var rowCount = table.rows.length;
var fila=rowCount+1;
var total=document.getElementById("atotal");
total.value=fila;
var row = table.insertRow(rowCount);
var cell1 = row.insertCell(0);
var element1 = document.createElement("input");
element1.type = "checkbox";
cell1.appendChild(element1);
var cell2 = row.insertCell(1);
var element2 = document.createElement("input");
element2.type = "text";
element2.name = "acuerdo"+fila;
element2.size='43';
element2.id= "acuerdo"+fila;
element2.value=texto
cell2.appendChild(element2);
}
function deleteRow(tableID) {
try {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var total=document.getElementById("atotal");
for(var i=0; i<rowCount; i++) {
var row = table.rows[i];
var chkbox = row.cells[0].childNodes[0];
if(null != chkbox && true == chkbox.checked) {
table.deleteRow(i);
rowCount--;
i--;
}
total.value=rowCount;
}
}catch(e) {
alert(e);
}
}
</SCRIPT>
</HEAD>
<BODY>
<form name="fomulario" id="fomulario" >
<input type="text" name="acuerdo"id="acuerdo">
</input><br>
<INPUT type="button" value="Add Row" onclick="addRow('dataTable');" />
<INPUT type="button" value="Delete Row" onclick="deleteRow('dataTable');" />
<TABLE id="dataTable" width="350px" border="1"><INPUT type='hidden' value=' ' id='total' name='total'>
</TABLE>
</form>
</BODY>
</html>