First go to the blog of foreigner Drew Diller to download a js file: www.dillerdesign.com/experiment/DD_belatedPNG/
Download the JS file and put it in your website directory,
Then add the following code to the <head></head> of the html:
<!--[if IE 6]> <script src="js/DD_belatedPNG_0.0.8a-min.js" type="text/javascript"></script> <script type="text/javascript"> DD_belatedPNG.fix('div, ul, img, li, input'); </script> <![endif]-->
Note: DD_belatedPNG.fix('tags containing transparent PNG images'); Multiple tags are separated by commas.
Disadvantages of this solution:
1. Your CPU may soar when opening pages.
2. The hand shape of the linked hover will become a pointer, but the link exists. Solution: Just add a{cursor:pointer} to css.
The first method: define a style, after applying this style to a div, the transparent png background image of the div is automatically transparent. (Note that the paths of the two images are written differently. In this example, the icon_home.png image and the html file are in the same directory)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>Untitled document</title> <style type="text/css"> <!-- .qq { height: 90px; width: 90px; background-image: url(icon_home.png)!important;/* FF IE7 */ background-repeat: no-repeat; _filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='icon_home.png'); /* IE6 */ _ background-image: none; /* IE6 */ } --> </style> </head> <body> <div class="qq"></div> </body> </html>
The second method: Define a style for img, and all transparent pngs on the page are automatically transparent. (This method is only valid for directly inserted pictures, not for background images) Note that a small transparent picture transparent.gif should be prepared, and the size is not limited. Must be placed in the same directory as html.
Do not use a lot, otherwise it will cause the page to open very slowly!!!)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>Untitled document</title> <style type="text/css"> .mypng img { azimuth: expression( this.pngSet?this.pngSet=true:(this.nodeName == "IMG" && this.src.toLowerCase().indexOf('.png')>-1?(this.runtimeStyle.backgroundImage = "none", this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='image')", this.src = "transparent.gif"):(this.origBg = this.origBg? this.origBg :this.currentStyle.backgroundImage.toString().replace('url("','').replace('")',''), this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.origBg + "', sizingMethod='crop')", this.runtimeStyle.backgroundImage = "none")),this.pngSet=true); } </style> </head> <body> Change to your png image <div class="mypng"> <img src="icon_face_07.png" width="30" height="30" /> <img src="icon_face_10.png" width="30" height="30" /> <img src="icon_face_08.png" width="30" height="30" /> </div> </body> </html>
第 3 种方法:用JS实现,加上一段js代码后,所有插入的透明png自动透明了.(注意,这方法也是只对直接插入的图片有效,对背景图无效)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>无标题文档</title> <script language="JavaScript"> function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6. { var arVersion = navigator.appVersion.split("MSIE") var version = parseFloat(arVersion[1]) if ((version >= 5.5) && (document.body.filters)) { for(var j=0; j<document.images.length; j++) { var img = document.images[j] var imgName = img.src.toUpperCase() if (imgName.substring(imgName.length-3, imgName.length) == "PNG") { var imgID = (img.id) ? "id='" + img.id + "' " : "" var imgClass = (img.className) ? "class='" + img.className + "' " : "" var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' " var imgStyle = "display:inline-block;" + img.style.cssText if (img.align == "left") imgStyle = "float:left;" + imgStyle if (img.align == "right") imgStyle = "float:right;" + imgStyle if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle var strNewHTML = "<span " + imgID + imgClass + imgTitle + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";" + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" img.outerHTML = strNewHTML j = j-1 } } } } window.attachEvent("onload", correctPNG); </script> <style type="text/css"> <!-- body { background-color: #9999CC; } --> </style></head> <body> 把图片换成你自己的图片 <img src="img/icon_face_03.png" width="30" height="30" /><!--把图片换成你自己的图片 --> <img src="img/icon_face_05.png" width="30" height="30" /> <img src="img/menu_title_over.png" width="130" height="36" /> </body> </html>
方法四
<script language="javascript"> // 修复 IE 下 PNG 图片不能透明显示的问题 function fixPNG(myImage) { var arVersion = navigator.appVersion.split("MSIE"); var version = parseFloat(arVersion[1]); 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=\"" + "width:" + myImage.width + "px; height:" + myImage.height + "px;" + imgStyle + ";" + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" + "(src=\'" + myImage.src + "\', sizingMethod='scale');\"></span>"; myImage.outerHTML = strNewHTML; } } window.onload=function(){ document.getElementById("top").style.height=screen.height/5+"px"; }// </script>
用法如下:
<img src="logo.png" width="328" height="325" border="0" onload="fixPNG(this)" />