解决IE6下PNG图片不透明的方法二

<script language="javascript" type="text/javascript">
 function setPng(img, w, h) {
  ua = window.navigator.userAgent.toLowerCase();
  if(!/msie/.test(ua))
   return;
  imgStyle = "display:inline-block;" + img.style.cssText;
  strNewHTML = "<span style=\"width:" + w + "px; height:" + h + "px;" + imgStyle + ";" + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + img.src + "', sizingMethod='scale');\"></span>";
  img.outerHTML = strNewHTML;
 }
 </script>

  <div class="float_l" style="width:18px;height:18px;margin:11px 4px 0 2px;">
  <a href="upload/200906251215516101.png" border="0" onload="setPng(this, 18, 18);" /></a>
 </div>