IE9兼容问题，一个效果无法实现，谁能帮忙看看_html/css

IE9兼容问题，一个效果无法实现，谁能帮忙看看_html/css_WEB-ITnose

WBOY

Release： 2016-06-21 09:34:36

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd"><HTML xmlns="http://www.w3.org/1999/xhtml"><HEAD><meta name="keywords" content="JS代码,TAB标签,JS广告代码,JS特效代码" /><meta name="description" content="此代码内容为自适应宽度的标签导航，属于站长常用代码，更多TAB标签代码请访问天天素材网JS代码频道。" /><title>自适应宽度的标签导航_天天素材网</title><META http-equiv=Content-Type content="text/html; charset=gb2312"><STYLE type=text/css>BODY {	FONT-SIZE: 14px;	FONT-FAMILY: "宋体"}OL LI {	MARGIN: 8px}#con {	FONT-SIZE: 12px;	MARGIN: 0px auto;	WIDTH:768px;}#tags {	PADDING-RIGHT: 0px;	PADDING-LEFT: 0px;	PADDING-BOTTOM: 0px;	MARGIN: 0px 0px 0px 0px;	WIDTH: 400px;	PADDING-TOP: 0px;	HEIGHT: 23px;	background-color:#f2f9ff;	width:768px;	height:40px;}#tags LI {	/*background-color:#fff;*/ FLOAT: left;	LIST-STYLE-TYPE: none;	HEIGHT: 40px;}#tags LI A {	PADDING-RIGHT: 10px;	PADDING-LEFT: 10px;	FLOAT: left;	PADDING-BOTTOM: 0px;	COLOR: #999;	LINE-HEIGHT: 40px;	PADDING-TOP: 0px;	HEIGHT: 40px;	TEXT-DECORATION: none;	font-size:14px;	font-weight:bold; border-right:1px solid red;}#tags LI.emptyTag {	BACKGROUND: none transparent scroll repeat 0% 0%;	WIDTH: 4px}#tags LI.selectTag {	background-color:#fff;	MARGIN-BOTTOM: -1px;	POSITION: relative;	HEIGHT: 41px	}#tags LI.selectTag A {	COLOR: #000;	LINE-HEIGHT:41px;	HEIGHT: 41px;	border-right:1px solid red;}#tagContent {	border-top:1px solid red;	background-color:#fff;}.tagContent {	PADDING-RIGHT: 10px;	DISPLAY: none;	PADDING-LEFT: 10px;	background-color:#fff;	PADDING-BOTTOM: 10px;	WIDTH: 768px;	PADDING-TOP: 10px;}#tagContent DIV.selectTag {	DISPLAY: block;}</STYLE><META content="MSHTML 6.00.2800.1589" name=GENERATOR></HEAD><BODY><DIV id=con>  <UL id=tags>    <LI><A onClick="selectTag('tagContent0',this)"   href="javascript:void(0)">我的日志</A> </LI>    <LI class=selectTag><A onClick="selectTag('tagContent1',this)"   href="javascript:void(0)">好友的日志</A> </LI>  </UL>  <DIV id=tagContent>    <DIV class=tagContent id=tagContent0>第一个标签的内容</DIV>    <DIV class="tagContent selectTag" id=tagContent1>第二个标签的内容</DIV>  </DIV></DIV><p>   <SCRIPT type=text/javascript>function selectTag(showContent,selfObj){	// 操作标签	var tag = document.getElementById("tags").getElementsByTagName("li");	var taglength = tag.length;	for(i=0; i<taglength; i++){		tag[i].className = "";	}	selfObj.parentNode.className = "selectTag";	// 操作内容	for(i=0; j=document.getElementById("tagContent"+i); i++){		j.style.display = "none";		j.style.borderRight="none";	}	document.getElementById(showContent).style.display = "block";		}</SCRIPT> </p></BODY></HTML>

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效果如上，在IE8里面能实现，但是到IE9里面就一点反应都没了，怎么修改呢