var l = document.getElementsByTagName('img');
for(i=0;i<l.length;i++){
p = 'images/spacer.gif'; //copy this image to your server and change this url
n = l[i].getAttribute('src');
g = n.toLowerCase();
if(g.substring(g.length-3)=="png"){
l[i].setAttribute('src',p);
l[i].style.cssText="filter: progid:DXImageTransform.Microsoft.AlphaImageLoader (src='"+n+"')";
}
}