var TimeToFade = 1500.0;

function fade(eid)
{
  var element = document.getElementById(eid);
  if(element == null) return;
    
  if(element.FadeState == null)
  {
    if(element.style.opacity == null 
        || element.style.opacity == '' 
        || element.style.opacity == '1')
    {
      element.FadeState = 2;
    }
    else
    {
      element.FadeState = -2;
    }
  }
    
  if(element.FadeState == 1 || element.FadeState == -1)
  {
    element.FadeState = element.FadeState == 1 ? -1 : 1;
    element.FadeTimeLeft = TimeToFade - element.FadeTimeLeft;
  }
  else
  {
    element.FadeState = element.FadeState == 2 ? -1 : 1;
    element.FadeTimeLeft = TimeToFade;
	if (typeof(element.FadeBar)!="undefined") $(element.FadeBar).width = element.FadeState == 1 ? '100%' : '1%';
    setTimeout("animateFade(" + new Date().getTime() + ",'" + eid + "')", 33);
  }  
}

function animateFade(lastTick, eid)
{  
  var curTick = new Date().getTime();
  var elapsedTicks = curTick - lastTick;
  
  var element = document.getElementById(eid);
 
  if(element.FadeTimeLeft <= elapsedTicks)
  {
    element.style.opacity = element.FadeState == 1 ? '1' : '0';
    if (element.filters)
		element.filters.item(0).opacity =  
			(element.FadeState == 1 ? 100 : 1);
    element.FadeState = element.FadeState == 1 ? 2 : -2;
    return;
  }
 
  element.FadeTimeLeft -= elapsedTicks;
  var newOpVal = element.FadeTimeLeft/TimeToFade;
  if(element.FadeState == 1)
    newOpVal = 1 - newOpVal;

  element.style.opacity = newOpVal;
    if (element.filters)
		element.filters.item(0).opacity =  newOpVal * 100;
  if (typeof(element.FadeBar)!="undefined") $(element.FadeBar).width = newOpVal * 100 + '%';
  setTimeout("animateFade(" + curTick + ",'" + eid + "')", 33);
}