li隔行换色改进版

ghhs("nav01","li"); // 鼠标经过时变色
ghhs("nav02","li","no"); // 只隔行换色
ghhs("nav03","li","onclick"); // 鼠标点击当前标记变色

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">  
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN" xml:lang="zh-CN">  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  
<meta name="keywords" content="PRcss,xhtml,html,css,js,book,个人主页,无聊,神经,懒惰" />  
<meta name="description" content="PRcss的个人主页,无聊的,神经的,懒惰的..." />  
<meta name="Author" content="PRcss,qq:50198763" />  
<meta name="Copyright" content="本页版权归PRcss所有。All Rights Reserved" />  
<title>隔行换色 - www.phpstudy.net phpStudy</title>  
<script type="text/javascript">  
// 返回Id、Tag  
function Pid(id,tag){  
if(!tag){return document.getElementById(id);}  
else{return document.getElementById(id).getElementsByTagName(tag);}  
}  
// 隔行换色  
function ghhs(id,tag,s) {  
    var line=Pid(id,tag);  
    for (var i=1;i<line.length+1;i++) {   
        line[i-1].className=(i%2>0)?"t1":"t2";   
    }  
    if(s=="no"){  
        return;  
    }  
    else if(!s){  
        for(var i=0;i<line.length;i++) {  
            line[i].onmouseover=function(){  
                this.tmpClass=this.className;  
                this.className+=" up";  
            }  
            line[i].onmouseout=function(){  
                this.className=this.tmpClass;  
            }  
        }  
    }  
    else{  
        for(var i=0;i<line.length;i++) {  
            line[i].tmep=i;  
            line[i][s]=function(){  
                ghhs_tab(this.tmep);  
            }  
        }  
    }  
    function ghhs_tab(s){  
        for(var i=0;i<line.length;i++){  
            if(!line[i].tmpClass){  
                line[i].tmpClass=line[i].className+=" pr1984_com";  
            }  
            if(s==i){  
                line[i].className+=" up";  
            }  
            else {  
                line[i].className=line[i].tmpClass;  
            }  
        }  
    }  
}  
</script>  
<style type="text/css">  
.t1 {background:#eee;}  
.t2 {background:#fff;}  
.up {background:#ddd;}  
</style>  
</head>  
<body>

<div id="nav01">  
<ul>  
<li>路过</li><li>asdsad</li><li>asdsad</li><li>asdsad</li>  
</ul>  
</div>

<div id="nav02">  
<ul>  
<li>无视路过</li><li>asdsad</li><li>asdsad</li><li>asdsad</li>  
</ul>  
</div>

<div id="nav03">  
<ul>  
<li>踩我</li><li>asdsad</li><li>asdsad</li><li>asdsad</li>  
</ul>  
</div>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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