Side by Side column that calculates row totals

I am creating a Side by Side table that needs to have row and column totals. So far, I have been able to use code to create column totals, but I still need help with creating the row totals.

Here is the sample JavaScript code I used to create column totals (adopted from another Qualtrics user):

Qualtrics.SurveyEngine.addOnReady(function()
{
var $jq = jQuery.noConflict();// always keep this

$jq('.SBS1 input[type="text"]').before('$'); //insert $ sign before boxes
$jq('.SBS1 input[type="text"]').after('.00'); //insert .00 after boxes

var $sum = 0; // define sum variable
$jq('.SBS1 input:last').val($sum); // setting the value of total box
$jq('.SBS1 input:last').css('fontWeight','bold') // setting fontface="bold"
//color change
if($sum>0){
$jq('.SBS1 input:last').css('color','green');
}
else{
$jq('.SBS1 input:last').css('color','red');
}

// setting the value 0 for all boxes if blank or 0
$jq('.SBS1 input').each(function(){
$jq(this).val(getVal($jq(this).val()));
});

$jq('.SBS1 input').keyup(function(){
$jq('.SBS1 input').each(function(){
$jq(this).val(getVal($jq(this).val()));
});
});

//function for changing text value to numeric

function getVal(val){ var num = parseInt(val); if(isNaN(num)) { num = 0; } return num; };

// calculating some on keyup
$jq('.SBS1 input').not(':last').keyup(function(){
// for every box
var $sum = 0; // define sum variable
$jq('.SBS1 input').not(':last').each(function(){
$sum += +getVal($jq(this).val());
});
$jq('.SBS1 input:last').val($sum);
//color change
if($sum>0){
$jq('.SBS1 input:last').css('color','green');
}
else{
$jq('.SBS1 input:last').css('color','red');
}
});

// default choice magic
var $embedded = [];
var $length = $jq(".SBS2 select").length;
for (var i=0;i<$length-1;i++)
{
$embedded[i] = $jq(".SBS1 input").eq(i).val().trim();
$jq(".SBS2 select").eq(i).find('option:contains(' +$embedded[i]+ ')').attr('selected','selected');
}

});

Can I use similar code to allow a side by side column to sum row totals? How would I be able to do this?