CODE FOR FUNCTION PMT

<script language="JavaScript">

<!--

// Function to calculate Periodic Payments.

function pmt(rate, per, nper, pv, fv)

{

fv = parseFloat(fv);

nper = parseFloat(nper);

pv = parseFloat(pv);

per = parseFloat(per);

if (( per == 0 ) || ( nper == 0 )){

alert("Why do you want to test me with zeros?");

return(0);

}

rate = eval((rate)/(per * 100));

if ( rate == 0 ) // Interest rate is 0

{

pmt_value = - (fv + pv)/nper;

}

else

{

x = Math.pow(1 + rate,nper);

pmt_value = -((rate * (fv + x * pv))/(-1 + x));

}

pmt_value = conv_number(pmt_value,2);

return (pmt_value);

}

function conv_number(expr, decplaces)

{ // This function is from David Goodman's Javascript Bible.

var str = "" + Math.round(eval(expr) * Math.pow(10,decplaces));

while (str.length <= decplaces) {

str = "0" + str;

}

var decpoint = str.length - decplaces;

return (str.substring(0,decpoint) + "." + str.substring(decpoint,str.length));

}

// --></script>