1 function correctPNG(objTag) {
 2  // 为 IE 时生效
 3  if(jQuery.browser.msie) {
 4  $(objTag).each(function(){
 5  var src = $(this).attr(“src”);
 6  // src 不为空,且为 png 格式图片
 7  if (src != undefined && src.substring(src.length – 3, src.length).toLowerCase() == “png”) {
 8  // 取出图片原有属性
 9  var imgId = $(this).attr(“id”);
10  imgId = imgId == undefined ? ” : imgId;
11  var imgClass = $(this).attr(“class”);
12  imgClass = imgClass == undefined ? ” : imgClass;
13  var imgTitle = $(this).attr(“title”);
14  imgTitle = imgTitle == undefined ? ” : imgTitle;
15  var imgStyle = $(this).attr(“style”);
16  imgStyle = imgStyle == undefined ? ” : imgStyle;
17  imgStyle = “display:inline-block;” + imgStyle;
18  var imgAlign = $(this).attr(“align”);
19  // 图片对齐属性转为样式
20  switch(imgAlign) {
21  case “left”:
22  imgStyle = “float:left;” + imgStyle;
23  break;
24  case “right”:
25  imgStyle = “float:right;” + imgStyle;
26  break;
27  }
28  // 父标签为 a 时,应用鼠标样式为手指
29  if ($(this).parent().get(0).tagName.toLowerCase() == “a”) {
30  imgStyle = “cursor:hand;” + imgStyle;
31  }
32  // 设置宽高
33  imgStyle = “width:” + $(this).width() + “px; height:” + $(this).height() + “px;” + imgStyle;
34  // 设置 IE 的 PNG 透明滤镜
35  imgStyle = “filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\”“ + src + “\”,sizingMethod=\”scale\”);” + imgStyle;
36  // 替换 img 标签为 span
37  $(this).replaceWith(“<span id=’” + imgId + “‘ class=’” + imgClass + “‘ title=’” + imgTitle + “‘ style=’” + imgStyle + “‘></span>”);
38  }
39  });
40  }
41 }