function conv()
{
  with(document.mikm)
  {
    if(miles1.value.length > 0)
    {
      var mi = parseFloat(miles1.value)
      
      if(isNaN(mi))
        alert('Please enter a number for miles.')
      else kms1.value = Math.round(mi * 16) / 10
    }
    
    if(kms2.value.length > 0)
    {
      var km = parseFloat(kms2.value)
      
      if(isNaN(km))
        alert('Please enter a number for kilometers.')
      else miles2.value = Math.round(km * 6.25) / 10
    }
  }
}

function ToggleTextSize()
{
  if((document.body.style.fontSize == 'large') || (document.body.style.fontSize == 'x-large') || 
    (document.body.style.fontSize == 'xx-large'))
  {
    document.body.style.fontSize = '';
    document.getElementById('textSize').className = 'largeText';
    document.getElementById('aTextSize').innerText = 'Large Text Version';
  }
  else
  {
    document.body.style.fontSize = 'x-large';
    document.getElementById('textSize').className = 'normalText';
    document.getElementById('aTextSize').innerText = 'Normal Text Version';
  }
  
}