/* Script for functions used for mortgage calculations */

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

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);
}