function OpacityChange(image, value, captionId)
{
  if (navigator.appName == "Microsoft Internet Explorer")
    image.style.filter = "alpha(opacity=" + value + ")";
  
  var captionDiv = document.getElementById(captionId);
  if (captionDiv)
  {
    if (value == 100)
      captionDiv.style.color = 'rgb(243,166,22)';
    else
      captionDiv.style.color = 'rgb(255,255,255)';
  }
}