function correctPNG() // correctly handle PNG transparency in Win IE 5.5 or higher.
{
  for(var i=0; i<document.images.length; i++) {
    var img = document.images[i]
    var imgName = img.src.toUpperCase()
    var img2check = img.name.toUpperCase()
    if ((imgName.substring(imgName.length-3, imgName.length) == "PNG")) {
       var imgOver = img.onmouseover;
       var imgOut = img.onmouseout;
       var imgID = (img.id) ? "id='" + img.id + "' " : ""
       var imgClass = (img.className) ? "class='" + img.className + "' " : ""
       var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
       var imgStyle = "display:inline-block;" + img.style.cssText 
       if (img.align == "left") imgStyle = "float:left;" + imgStyle
       if (img.align == "right") imgStyle = "float:right;" + imgStyle
       if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
       
       var strNewHTML = "<span " + imgID + imgClass + imgTitle
       + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
         + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
       + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
       img.outerHTML = strNewHTML
       i = i-1
    }
  }
}

function flipsel(id,on,ext) {
  var this_src = id.src;
  if (!ext) {
    ext = ".png";
  } 
  if (on == true) {
    newsrc = this_src.replace(ext,"sel"+ext);
  } else {
    newsrc = this_src.replace("sel"+ext,ext);
  }
  id.src = newsrc;
}

function flipsel2(id,on,ext) {
  var this_src = window.document.images[id].src;
  if (!ext) {
    ext = ".jpg";
  } 
  if (on == true) {
    newsrc = this_src.replace(ext,"sel"+ext);
  } else {
    newsrc = this_src.replace("sel"+ext,ext);
  }
  window.document.images[id].src = newsrc;
}