function flr(num)
{
  return Math.floor(num*Math.pow(10,2))/Math.pow(10,2);
}

function LP_30()
{
 var N = 360;
 var J1 = document.F.LR.value/1200;
 var P = document.F.LA.value;
 var M1 = P * J1 / (1.0 - Math.pow((1 + J1), -N));
 document.F.LP.value = flr(M1);
 document.F.P1.value = flr(M1);
}
function LP_15()
{
 var N = 180;
 var J1 = document.F.LR.value/1200;
 var P = document.F.LA.value;
 var M1 = P * J1 / (1.0 - Math.pow((1 + J1), -N));
 document.F.LP.value = flr(M1);
 document.F.P1.value = flr(M1);
}
function P1_30()
{
 var N = 360;
 var J1 = document.F.R1.value/1200;
 var P = document.F.B1.value;
 var M1 = P * J1 / (1.0 - Math.pow((1 + J1), -N));
 document.F.P1.value = flr(M1);
}
function P1_15()
{
 var N = 180;
 var J1 = document.F.R1.value/1200;
 var P = document.F.B1.value;
 var M1 = P * J1 / (1.0 - Math.pow((1 + J1), -N));
 document.F.P1.value = flr(M1);
}
function P2_30()
{
 var N = 360;
 var J1 = document.F.R2.value/1200;
 var P = document.F.B2.value;
 var M1 = P * J1 / (1.0 - Math.pow((1 + J1), -N));
 document.F.P2.value = flr(M1);
}
function P2_15()
{
 var N = 180;
 var J1 = document.F.R2.value/1200;
 var P = document.F.B2.value;
 var M1 = P * J1 / (1.0 - Math.pow((1 + J1), -N));
 document.F.P2.value = flr(M1);
}
function P2_10()
{
 var N = 120;
 var J1 = document.F.R2.value/1200;
 var P = document.F.B2.value;
 var M1 = P * J1 / (1.0 - Math.pow((1 + J1), -N));
 document.F.P2.value = flr(M1);
}
function BalCal()
{
 var J1 = Number(document.F.LR.value)/1200;
 var P = document.F.LA.value;
 var LP = document.F.LP.value;
 var MP = Number(document.F.AP.value);
 for (i=0; i < MP; i++)
 {
   P = P * (1 + 1 * J1) - 1 * LP;
 }
 document.F.B1.value = flr(P);
 document.F.B2.value = flr(P);
 document.F.C2.value = flr(P * 0.025);
}