Hi

i am developing a web-based system involving JS calculation (ADD operator) but i can't still figure this out.. can anyone help me out here

function jumkerusi()
{


var a = parseInt(document.forms[0].jumbyrsofa.value);
var b = parseInt(document.forms[0].jumbyrvip.value);
var c = parseInt(document.forms[0].jumbyrplastik.value);


document.forms[0].jumbyrkerusi.value = parseInt(a+b+c);

}