Jquery:Sum values of checkbox on same row to textfield on same row
var total_array = new Array();
var total_amount = 0;
$("#dailyexpense input[type=checkbox]:checked ").live('change', function() {

    var check_id = $(this).attr('id');
    var valu = $(this).val();
    $("#tdtotals input[type=text]").each(function() {
        totals_id = $(this).attr('id');
        if (totals_id == check_id) {
            total_array.push(valu);
            total_amount = eval(total_array.join('+')).toFixed(2);
            $(this).val(total_amount);
        }

    });
});

//watch checkboxes
$('tr input[type=checkbox]').change( function(){
  var total = 0;
  //total all sibling checkboxes
  $(this).parents('tr').find('input[type=checkbox]:checked').each( function() {
    total += parseInt($(this).val());
  });

  //display the result
  $(this).parents('tr').find('input[type=text]:last').val(total);
});