//PNG TRANSPARENTE
function PNG_loader() { 
   for(var i=0; i<document.images.length; i++) { 
      var image = document.images[i]; 
      var imageName = image.src.toUpperCase(); 
      if (imageName.substring(imageName.length-3, imageName.length) == "PNG") { 
         var imageID = (image.id) ? "id='" + image.id + "' " : ""; 
         var imageClass = (image.className) ? "class='" + image.className + "' " : ""; 
         var imageTitle = (image.title) ? "title='" + image.title + "' " : "title='" + image.alt + "' "; 
         var imageStyle = "display:inline-block;" + image.style.cssText; 
         if (image.align == "left") imageStyle += "float:left;"; 
         if (image.align == "right") imageStyle += "float:right;"; 
         if (image.parentElement.href) imageStyle += "cursor:hand;"; 
         var strNewHTML = "<span " + imageID + imageClass + imageTitle 
            + " style=\"" + "width:" + image.width + "px; height:" + image.height + "px;" + imageStyle + ";" 
            + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" 
            + "(src=\'" + image.src + "\', sizingMethod='scale');\"></span>"; 
         image.outerHTML = strNewHTML; 
         i--; 
      } 
   } 
} 
window.attachEvent("onload", PNG_loader);