Autocalculation in footer

Im using {#stat_total} in footer and I want to add one more footer bellow with this logic:



Column A Column B

footer 1: sum:, {#stat_total},{#stat_total}

footer 2: diff:, {#Column A- Column B}, {#Column B- Column A}



Is it possible?



BTW: Im using smartRendering

You can add footers as
groi.attachFooter("

{#stat_total}
,
{#stat_total}
")
groi.attachFooter("
,
")
and next logic to the grid


grid.attachEvent(“onStatReady”,function(){
var sum1=document.getElementById(“summ1”);
var sum2=document.getElementById(“summ2”);
var sum3=document.getElementById(“summ3”);
var sum4=document.getElementById(“summ4”);

sum3.innerHTML = sum1.innerHTML - sum2.innerHTML
sum4.innerHTML = sum2.innerHTML - sum1.innerHTML

})