need help in rounding off into two decimal places

[newphpbees]

Hi..

I have javascript code with computation, but I have problem in my result because it was not round off or fixed into two decimal places only.

here is my code:



<script type="text/javascript">

function test_(cmpd) {
var len_ = (document.frmMain.elements.length) - 1;

for (i=0; i <= len_; i++ ) {

var strPos_ = document.frmMain.elements[i].id.indexOf(cmpd)


if (strPos_ != -1) {
var strPos = document.frmMain.elements[i].id.indexOf("_");

var strId = document.frmMain.elements[i].id.slice(strPos + 1) + "_" + document.frmMain.elements[i].id.slice(0,strPos)
// this is the computation that I need to fixed the result into two decimal places
document.frmMain.elements[i].value = document.getElementById(strId).value * document.getElementById('mult').value;
}
}
}
</script>


Thank you so much