<!-- Author: Brian Mackenzie -->
<!-- Date: 11th March 2004 -->
<!-- Version: 1.0 -->
<!-- Function:  Calculate Sprint Bound Index   -->
<!-- Required by: sbi.htm -->
<!-- Copyright Brian Mackenzie 2004 -->

function calculate()
{
  var time = document.stride.time.value;
  var bounds = document.stride.bounds.value;

  sbi = time*bounds;

  document.stride.sbi.value = nt2dp(sbi,2);
}

function valclear()
{
  document.stride.sbi.value = "";
}

function nt2dp(num,dp)
{
<!-- rounds num to dp decimal places -->
  num=num*1+(0.55/Math.pow(10,dp));
  if (dp>0) dp=dp+1;
  b=Math.floor(num).toString().length+dp;
  return num.toString().substr(0,b);
}