代码如下：
<html>
<head>
<title>高亮显示搜索关键字-www.jb200.com</title>
<style type="text/css">
.highlight {color:red;}
</style>
<script type="text/javascript">
function highword(nWord){
var table = document.getElementById("row");
if (table!=null)
highLightKeyWord(table,nWord,"highlight");
}
function highLightKeyWord(eTable,strKeyWord,className){
var rows = eTable.rows;
//var oRegExp = new RegExp("" + strKeyWord + "","g");//g表示全局搜索，i表示忽略大小写
var oRegExp = new RegExp("" + strKeyWord + "","img");
for(var i=0,rl=rows.length;i<rl;i++){
var r = rows.item(i);
for(var j=0,tl=r.cells.length;j<tl;j++){
var innerText = r.cells.item(j).innerHTML;
if (innerText.indexOf("<")<0 && i>0) {
var searchValue=innerText.match(oRegExp,strKeyWord);
//var tmp = innerText.replace(oRegExp,"<span class='"+className+"'>"+strKeyWord+"</span>");
var tmp = innerText.replace(oRegExp,"<span class='"+className+"'>"+searchValue+"</span>");
r.cells.item(j).innerHTML = tmp;
}
}
}
}
</script>
</head>
<body onload="highword('Nms')">
<table id="row">
<tr>
<th width=100 align="left">列1</th><th width=100 align="left">列2</th><th width=100 align="left">列3</th>
</tr>
<tr>
<td>NMSABC</td>
<td>NmsAbc</td>
<td>nmsabc</td>
</tr>
<tr>
</table>
</body>
</html>
#---
好东西不怕多，再为大家友情提供另一个例子，有空就来脚本学堂转转吧，总会有惊喜。
广告穿插完毕，呵呵！
#---
附，搜索多个关键字之后，高亮显示，并且忽略大小写：
<script>
/**
* 高亮显示搜索关键字
* www.jb200.com
*/
function HighLight(nWord){
if(nWord!=''){
var keyword = document.body.createTextRange();
while(keyword.findText(nWord)){
keyword.pasteHTML("<span style='color:blue;background-color:#FFFF00'>" + keyword.text + "</span>");
keyword.moveStart('character',1);
}
}
}
function highword(nWord){
var array = nWord.split(" ");
for(var i=0;i<array.length;i++){
alert(array[i]);
HighLight(array[i]);
}
}
</script>
<body onload="highword('LI jin')">
<table id="row">
<tr><td>liujinzhong liujinzhong liuzhong</td></tr>
<tr><td>liujinzhong liujinzhong liuzhong</td></tr>
<tr><td>LiuJinzhong LIUjinzhong liuzhong</td></tr>
</table>
<p>liujinzhong liujinzhong liuzhong</p>
</body>