function colorHeader(flag)
{
  HeaderDiv.style.backgroundImage =
    "url(" +
    (flag ? "" : "/thumbnails/g1") +
    "/images/header-bg-img01.jpg" +
    ")";
  return true;
}

function colorImg(id, flag)
{
  if(!document.getElementById)
  {
    return false;
  }
  
  var obj = document.getElementById(id);
  if(!obj || !obj.src || obj.getAttribute("colorsrc") == "" || obj.getAttribute("gsrc") == "")
  {
    return false;
  }

  obj.src = flag ? obj.getAttribute("colorsrc") : obj.getAttribute("gsrc");
  //alert(obj.src);
  return true;
}

function colorImgChange(src)
{
  if(!document.getElementById)
  {
    return false;
  }

  var obj = document.getElementById('DetailImage');
  if(!obj || !obj.src)
  {
    return false;
  }

  obj.src = src;
  return false;
}

function preloadGrayImgs()
{
  var a =  getElementsByTagName(document, "IMG");
  for(var i = 0; i < a.length; ++i)
  {
    if(!a[i] || !a[i].src || !a[i].getAttribute("colorsrc") || !a[i].getAttribute("gsrc"))
    {
      continue;
    }
    var img = new Image();
    img.src = a[i].getAttribute("gsrc");
    var img2 = new Image();
    img2.src = a[i].getAttribute("colorsrc");
  }
}