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="images/transparent.gif"
           img.width=LW
           img.height=LH
     }
     }
}
if (isIE()) {window.attachEvent("onload", correctPNG);}