function floor(number)
{
  return Math.floor(number*Math.pow(10,2))/Math.pow(10,2);
}
//mortgage_payment_calc
function dosum()
{
  var mi = document.temps.IR.value / 1200;
  var base = 1;
  var mbase = 1 + mi;
  for (i=0; i<document.temps.YR.value * 12; i++)
  {
    base = base * mbase
  }
  document.temps.PI.value = floor(document.temps.LA.value * mi / ( 1 - (1/base)))
  document.temps.MT.value = floor(document.temps.AT.value / 12)
  document.temps.MI.value = floor(document.temps.AI.value / 12)
  var dasum = document.temps.LA.value * mi / ( 1 - (1/base)) +
	document.temps.AT.value / 12 +
	document.temps.AI.value / 12;
  document.temps.MP.value = floor(dasum);
}
//interest_only_payment_calc
function dosum2()
{
  var mi = document.temps.IR.value / 1200;
  var base = 1;
  var mbase = 1 + mi;
  document.temps.PI.value = floor(mi * document.temps.LA.value);
  document.temps.MT.value = floor(document.temps.AT.value / 12)
  var dasum = (mi * document.temps.LA.value)  +
	document.temps.AT.value / 12; 
  document.temps.MP.value = floor(dasum);
}
//second_mortgage_payment_calc
function first3()
{
  document.temps.LA.value = floor(document.temps.house.value * .80);
  document.temps.LA2.value = floor(document.temps.LA.value - document.temps.cbalance.value);
  var mi = document.temps.cir.value / 1200;
  var base = 1;
  var mbase = 1 + mi;
  for (i=0; i<document.temps.cyr.value * 12; i++)
  {
    base = base * mbase
  }
  document.temps.cmp.value = floor(document.temps.cbalance.value * mi / ( 1 - (1/base)))
}

function dosum3()
{
  var mi = document.temps.IR.value / 1200;
  var mi2 = document.temps.IR2.value / 1200;
  var base = 1;
  var base2 = 1;
  var mbase = 1 + mi;
  var mbase2 = 1 + mi2;
  for (i=0; i<document.temps.YR.value * 12; i++)
  {
    base = base * mbase
  }
  for (i=0; i<document.temps.YR2.value * 12; i++)
  {
    base2 = base2 * mbase2
  }
  var nLA = (document.temps.LA.value / 1 + document.temps.LA2.value / 1);
  document.temps.PI.value = floor(document.temps.LA.value * mi / ( 1 - (1/base)))
  document.temps.PI2.value = floor(document.temps.LA2.value * mi2 / ( 1 - (1/base2)))
  document.temps.MT.value = floor(document.temps.AT.value / 12)
  document.temps.MT2.value = floor(document.temps.AT2.value / 12)
  document.temps.MI.value = floor(document.temps.AI.value / 12)
  document.temps.MI2.value = floor(document.temps.AI2.value / 12)
  var dasum = document.temps.LA.value * mi / ( 1 - (1/base)) +
	document.temps.AT.value / 12 +
	document.temps.AI.value / 12;
  var dasum2 = document.temps.LA2.value * mi2 / ( 1 - (1/base2)) +
        document.temps.AT2.value / 12 +
        document.temps.AI2.value / 12;
  document.temps.MP.value = floor(dasum);
  document.temps.MP2.value = floor(dasum2);
}