透明PNG在IE6下的官方解决方案(仅支持img)
做Web开发的朋友一定都知道PNG是一个相当不错的图片格式,但是这个好的格式却在IE6时代造成了麻烦,IE6会使透明的PNG的透明部分出现#DBEAED的色彩。透明不了。使得在FF下开发表现很好的界面换成IE浏览就惨不忍睹,又逼着换成GIF,而GIF的假透明在变换背景时造成毛边现象。
刚去了www.gowindowslive.com去生成一个WLM的联系方式图标,结果发现的官方的解决方案。;)
核心函数贴出来供分析
Correctly handle PNG transparency in Win IE 5.5 & 6.
Copyright 2007 Ignia, LLC
Based in part on code from from http://homepage.ntlworld.com/bobosola.
Use in with DEFER keyword wrapped in conditional comments:
[separator]
*/
function fixPng() {
var arVersion = navigator.appVersion.split("MSIE")
var version = parseFloat(arVersion[1])
if ((version >= 5.5 && version < 7.0) && (document.body.filters)) {
for(var i=0; i
var imgName = img.src.toUpperCase();
if (imgName.indexOf(".PNG") > 0) {
var width = img.width;
var height = img.height;
var sizingMethod = (img.className.toLowerCase().indexOf("scale") >= 0)? "scale" : "image";
img.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + img.src.replace('%23', '%2523').replace("'", "%27") + "', sizingMethod='" + sizingMethod + "')";
img.src="images/blank.gif" mce_src="images/blank.gif";
img.width = width;
img.height = height;
}
}
}
}
fixPng();