png图片透明在ie6中显示问题

png图片透明在ie6浏览器显示存在问题

解决办法如下：

第一种情况：背景图片 

<link href="style.css" rel="stylesheet" type="text/css" />
<!--[if IE 6]>
<link href="ie6.css" rel="stylesheet" type="text/css" />
<![endif]-->

style.css

.pngfix {
        width: 100px;
        height: 60px;
        background: url(logo.png) no-repeat;  
}

ie6.css

html .pngfix {
        background: none; 
        width: 100px;
        height: 60px;
        filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale, src='logo.png');
}

调用的时候

<div class="pngfix"></div>

 第二种情况：图片

在head加上这个js

<!--[if IE 6]>
<script type="text/javascript" src="pngfix.js"></script>
<![endif]-->

pngfix.js

var arVersion = navigator.appVersion.split("MSIE")
var version = parseFloat(arVersion[1])

function fixPNG(myImage) 
{
    if ((version >= 5.5) && (version < 7) && (document.body.filters)) 
    {
       var imgID = (myImage.id) ? "id='" + myImage.id + "' " : ""
    var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : ""
    var imgTitle = (myImage.title) ? 
               "title='" + myImage.title  + "' " : "title='" + myImage.alt + "' "
    var imgStyle = "display:inline-block;" + myImage.style.cssText
    var strNewHTML = "<span " + imgID + imgClass + imgTitle
                  + " style=\"" + "" + myImage.width 
                  + "px; height:" + myImage.height 
                  + "px;" + imgStyle + ";"
                  + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
                  + "(src=\'" + myImage.src + "\', sizingMethod='scale');\"></span>"
    myImage.outerHTML = strNewHTML   
    }
}

调用的时候

<img src="logo.png" width="100" height="60" alt="logo" onload="fixPNG(this)" />