<!-- Begin
function equiv (form) {

a = form.invrate.value * 28 / 36500;

pp = 1 - a;

cp = pp * a;

b = 1 + (form.bankrate.value * 28 / 36500); 

var bank = 0;

var i=1;

for (i=1;i<=13;i++)
{
bank = bank * b;

bank = bank + cp;
}

bank = bank + (cp/28);

form.principal.value = pp * 1000;

form.billint.value = (cp*13.0357) * 1000 ;

form.bankint.value = (bank*1000) - form.billint.value;

form.apy.value = ( ((pp+bank)/ pp) - 1) * 100;


}
// End -->