On the Fly Calculation on inline add row?

Check this article: http://xlinesoft.com/phprunner/docs/how_to_calculate_values_on_the_fly.htm

Enter the code in the "Javascript onload" event of the Add page.

Thank Christian, how to use this code on "inline add" which is on a list page not add page?

To use fly calculation for inline add on the list page, you have to enter the js code in the "Javascript onload" event of ADD page.

I believe this is the calculation for a sub total for a row, what I need is the sum of this sub total for the whole column.

Not sure if this helps. My Javascript is very bad. This is some code that I used for a forecast module to total up 12 months usage. I used on the edit page javascript on load. It works in line and on the edit page.
var ctrljan = Runner.getControl(pageid, 'jan');

var ctrlfeb = Runner.getControl(pageid, 'feb');

var ctrlmar = Runner.getControl(pageid, 'mar');

var ctrlapr = Runner.getControl(pageid, 'apr');

var ctrlmay = Runner.getControl(pageid, 'may');

var ctrljun = Runner.getControl(pageid, 'jun');

var ctrljul = Runner.getControl(pageid, 'jul');

var ctrlaug = Runner.getControl(pageid, 'aug');

var ctrlsep = Runner.getControl(pageid, 'sep');

var ctrloct = Runner.getControl(pageid, 'oct');

var ctrlnov = Runner.getControl(pageid, 'nov');

var ctrldec = Runner.getControl(pageid, 'dec');

var ctrltotal = Runner.getControl(pageid, 'total');
function func() {

ctrltotal.setValue(

parseFloat(ctrljan.getValue().replace(",", ".")) +

parseFloat(ctrlfeb.getValue().replace(",", ".")) +

parseFloat(ctrlmar.getValue().replace(",", ".")) +

parseFloat(ctrlapr.getValue().replace(",", ".")) +

parseFloat(ctrlmay.getValue().replace(",", ".")) +

parseFloat(ctrljun.getValue().replace(",", ".")) +

parseFloat(ctrljul.getValue().replace(",", ".")) +

parseFloat(ctrlaug.getValue().replace(",", ".")) +

parseFloat(ctrlsep.getValue().replace(",", ".")) +

parseFloat(ctrloct.getValue().replace(",", ".")) +

parseFloat(ctrlnov.getValue().replace(",", ".")) +

parseFloat(ctrldec.getValue().replace(",", "."))

);

};
ctrljan.on('keyup', func);

ctrlfeb.on('keyup', func);

ctrlmar.on('keyup', func);

ctrlapr.on('keyup', func);

ctrlmay.on('keyup', func);

ctrljun.on('keyup', func);

ctrljul.on('keyup', func);

ctrlaug.on('keyup', func);

ctrlsep.on('keyup', func);

ctrloct.on('keyup', func);

ctrlnov.on('keyup', func);

ctrldec.on('keyup', func);

Obviously you can use the tips * instead of + where needed