/*
 
Correctly handle PNG transparency in Win IE 5.5 & 6.
http://homepage.ntlworld.com/bobosola. Updated 18-Jan-2006.

Use in <HEAD> with DEFER keyword wrapped in conditional comments:
<!--[if lt IE 7]>
<script defer type="text/javascript" src="pngfix.js"></script>
<![endif]-->


var arVersion = navigator.appVersion.split("MSIE")
var version = parseFloat(arVersion[1])

if ((version >= 5.5) && (document.body.filters)) 
{
   for(var i=0; i<document.images.length; i++)
   {
      var img = document.images[i]
      var imgName = img.src.toUpperCase()
      if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
      {
         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
      }
   }
}
*/

/*
  Correctly handle PNG transparency in Win IE 5.5 & 6.
  http://homepage.ntlworld.com/bobosola/imagemap.htm
*/
var strGif = "js/transparentpixel.gif"
var strFilter = "progid:DXImageTransform.Microsoft.AlphaImageLoader"
var arVersion = navigator.appVersion.split("MSIE")
var version = parseFloat(arVersion[1])
if ((version >= 5.5) && (document.body.filters)) {
  for(var i=0; i<document.images.length; i++) {
    var img = document.images[i]
    var imgName = img.src.toUpperCase()
    if (imgName.substring(imgName.length-3, imgName.length)
     == "PNG") {
      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
      if (img.useMap) {  
	var strAddMap = "<img style=\"position:relative; left:-"
         + 0 + "px; top:" + 0 +"px;" + "height:" + img.height
         + "px;width:" + img.width +"\" " + "src=\"" + strGif
         + "\" usemap=\"" + img.useMap + "\" border=\"" + img.border
         + "\"></span>"
	var strNewHTML = "<span " + imgID + imgClass + imgTitle
         + " style=\"" + "width:" + img.width + "px; height:"
         + img.height + "px;" + imgStyle + ";" + "filter:"
         + strFilter + "(src=\'" + img.src + "\',sizingMethod='scale');\">" 
	strNewHTML += strAddMap
      }
      else {
	var strNewHTML = "<span " + imgID + imgClass + imgTitle
        + " style=\"" + "width:" + img.width + "px; height:"
        + img.height + "px;" + imgStyle + ";" + "filter:"
        + strFilter + "(src=\'" + img.src + "\',sizingMethod='scale');\"></span>"
      } 
      img.outerHTML = strNewHTML
      i = i-1
    }
  }
  for(i=0; i < document.forms.length; i++)
   findImgInputs(document.forms(i))
}
function findImgInputs(oParent) {
  var oChildren = oParent.children
  if (oChildren) {
    for (var i=0; i < oChildren.length; i++) {
      var oChild = oChildren(i)
      if ((oChild.type == 'image') && (oChild.src)) {
	var origSrc = oChild.src
        oChild.src = strGif
        oChild.style.filter = strFilter + "(src='" + origSrc + "')"
      }
      findImgInputs(oChild)
    }
  }
}
