<!-- Author: Brian Mackenzie -->
<!-- Date: 17th June 2007 -->
<!-- Version: 1.0 -->

function calculate()

{
  var t = document.stride.electric.options[document.stride.electric.selectedIndex].value;
  var e = document.stride.events.options[document.stride.events.selectedIndex].value;
  var r = document.stride.result.value;
  
  var a = [0,20.0479,17.8570,9.23076,4.99087,1.34285,0.11193,0.02883,1.84523,0.188807,0.44125,56.0211,15.9803,12.3311];
  var b = [0,17,21,26.7,42.5,91.7,254,535,75,210,100,1.5,3.8,3];
  var c = [0,1.835,1.81,1.835,1.81,1.81,1.88,1.88,1.348,1.41,1.35,1.05,1.04,1.10];
  
  d=e*1;

 if (d>7)
  {
  p=Math.floor(a[d]*Math.pow((r-b[d]),c[d]));
  }
  else
  {
	f=0;
	if (t=="No")
	{
	  if (d<5) f=0.24;
	  if (d==5) f=0.14;
	}
	p=Math.floor(a[d]*Math.pow((b[d]-f-r),c[d]));
  }
  document.stride.points.value = p;

}

function valclear()

{
  document.stride.points.value = "";
  document.stride.result.value = "";
}

function symbol()
{
  var e = document.stride.events.options[document.stride.events.selectedIndex].value;
  d=e*1;
  m="secs";
  if (d>7) m="cm";
  if (d>10) m="m";
  document.stride.measure.value = m;
}