function setPng24(obj) { 
 obj.width=obj.height=1; 
 obj.className=obj.className.replace(/\bpng24\b/i,''); 
 obj.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+ obj.src +"',sizingMethod='image');" 
 obj.src='';  
 return ''; 
}