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

function correctPNG() // correctly handle PNG transparency in Win IE 5.5 and 6.
{
    try{
       if ((version >= 5.5 && version <= 6.0) && (document.body.filters)) 
       {
           for(var i=0; i<document.images.length; i++)
           {
	          var img = document.images[i];

	          if(img.isHandled == null)
	          {
	              img.isHandled = true;
        	      
	              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 
		             var imgAttribs = img.attributes;
		             for (var j=0; j<imgAttribs.length; j++)
			         {
			            var imgAttrib = imgAttribs[j];
			            if (imgAttrib.nodeName == "align")
			            {		  
			               if (imgAttrib.nodeValue == "left") imgStyle = "float:left;" + imgStyle
			               if (imgAttrib.nodeValue == "right") imgStyle = "float:right;" + imgStyle
			               break
			            }
                     }
		             var strNewHTML = "<span " + imgID + imgClass + imgTitle
		             strNewHTML += " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
	                 strNewHTML += "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
		             strNewHTML += "(src='" + img.src + "', sizingMethod='image');\""
        		     
		             if(img.isSwappable != null)
		             {
		                strNewHTML += " onmouseover=\"PNGswap('" + img.id + "');\" onmouseout=\"PNGswap('" + img.id +"');\""
		             }
        		     
		             strNewHTML += "></span>" 
		             img.outerHTML = strNewHTML
		             i = i-1
		         }
	          }
           }
       }
    }
    catch(exception)
    {
        var z = false;
    }
}

window.attachEvent("onload", correctPNG);

function PNGswap(myID)
{
   var strOver  = "over."
   var strOff = "up."
   var oSpan = document.getElementById(myID)
   var currentAlphaImg = oSpan.filters(0).src.toLowerCase();
   if (currentAlphaImg.indexOf(strOver) != -1)
      oSpan.filters(0).src = currentAlphaImg.replace(strOver,strOff)
   else
      oSpan.filters(0).src = currentAlphaImg.replace(strOff,strOver)
}

function PNGGetImage(myID)
{
   var oSpan = document.getElementById(myID);
   if(oSpan != null)
   {
        return oSpan.filters(0);
   }
   return null;
}