// Ignore script errors.
function IgnoreError()
{
  return true;
}
window.onerror = IgnoreError;
 
if (document.images)
{
  imgSnowFlake	= new Image(); imgSnowFlake.src	= "images/snowflake.gif";
  imgPawFlake	= new Image(); imgPawFlake.src	= "images/snowpaw.gif";
}

function MakeTrack(navName)
{
  if (document[navName])
    document.images[navName].src = imgPawFlake.src;
}
  
function LoseTrack(navName)
{
  if (document[navName])
    document.images[navName].src = imgSnowFlake.src;
}