<!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>
    <title></title>
    <style type="text/css">
        .style1
        {
            height: 27px;
            text-align: right;
        }
        .style2
        {
            height: 20px;
        }
    </style>
      <script language="javascript" type="text/javascript" src="ChangeFont.js"></script>
    <script language="javascript" type="text/javascript">
// <![CDATA[
        var size = 12, height = 16;
        function Button4_onclick() {
            var tdObject = document.getElementById("tdText");
            tdObject.innerHTML = ConvertToTraditionalChinese(tdObject.innerHTML);
        }
        function Button1_onclick() {
            if (size>6) {
                document.getElementById("tdText").style.fontSize = (--size) + 'pt';
                document.getElementById("tdText").style.lineHeight = (--height) + 'pt';
            }
        }
        function Button2_onclick() {
            if (size < 50) {
                document.getElementById("tdText").style.fontSize = (++size) + 'pt';
                document.getElementById("tdText").style.lineHeight = (++height) + 'pt';
            }
        }
        function Button3_onclick() {
            var tdObject = document.getElementById("tdText");
            //alert(tdObject.innerHTML);
            tdObject.innerHTML = ConvertToSimplifiedChinese(tdObject.innerHTML);
        }
// ]]>
    </script>
</head>
<body>
    <table style="width:100%;">
        <tr>
            <td class="style1">
                </td>
            <td class="style1">
                更改字体<input id="Button1" type="button" value="小" onclick="return Button1_onclick()" /><input id="Button2"
                    type="button" value="大" onclick="return Button2_onclick()" /><input id="Button3" type="button" value="简体" onclick="return Button3_onclick()" /><input
                    id="Button4" type="button" value="繁体" onclick="return Button4_onclick()" /></td>
            <td class="style1">
                </td>
        </tr>
        <tr>
            <td class="style2">
                </td>
            <td class="style2" id="tdText">
            中华人民共和国
</td>
            <td class="style2">
                </td>
        </tr>
       
    </table>
</body>
</html>

 在vs2010中新建网站，写入上述代码，网站->添加现有项--选择changefont.js文件