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<html>
<head>
<title>在不同CSS文件之间平滑切换</title>
<link rel="stylesheet" href="style_1.css">
<link rel="stylesheet" href="style_2.css">
<link rel="stylesheet" href="style_3.css">
<script language="JavaScript">
<!--
var doAlerts=false;
function changeSheets(whichSheet){
whichSheet=whichSheet-1;
if(document.styleSheets){
var c = document.styleSheets.length;
if (doAlerts) alert('Change to Style '+(whichSheet+1));
CSS代码...
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JS代码...