This is how I accomplished reading a table in javascript. Basically I drilled down into the rows and then I was able to drill down into the individual cells for each row. This should give you an idea

var oTable = document.getElementById('myTable');

//gets table

var rowLength = oTable.rows.length;

//gets rows of table

for (i = 0; i < rowLength; i++){

//loops through rows

var oCells = oTable.rows.item(i).cells;

//gets cells of current row

var cellLength = oCells.length;

for(var j = 0; j < cellLength; j++){

//loops through each cell in current row

<!--get your cell info here-->

<!--var cellVal = oCells.item(j).innerHTML;-->

}

}

UPDATED - TESTED SCRIPT

<table id="myTable">

<tr>

<td>A1</td>

<td>A2</td>

<td>A3</td>

</tr>

<tr>

<td>B1</td>

<td>B2</td>

<td>B3</td>

</tr>

</table>

<script>

var oTable = document.getElementById('myTable');

//gets table

var rowLength = oTable.rows.length;

//gets rows of table

for (i = 0; i < rowLength; i++){

//loops through rows

var oCells = oTable.rows.item(i).cells;

//gets cells of current row

var cellLength = oCells.length;

for(var j = 0; j < cellLength; j++){

//loops through each cell in current row

<!--get your cell info here-->

var cellVal = oCells.item(j).innerHTML;

alert(cellVal);

}

}

</script>