function isIE(){
if (navigator.appName!="Microsoft Internet Explorer") {return false;}
return true;
}

function correctPNG() 
{
   for(var i=0; i<document.images.length; i++)
   {
	  var img = document.images[i];
	  var LW=img.width;
	  var LH=img.height;
	  var imgName = img.src.toUpperCase();
	  if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
	  { 
         img.style.filter+="progid:DXImageTransform.Microsoft.AlphaImageLoader(src="+img.src+", sizingmethod=scale);";
         img.src="js/transparent.gif";
         img.width=LW;
         img.height=LH;
	  }
   }
}
if (isIE()) {window.attachEvent("onload", correctPNG);}