jquery脚本 - 不适用于1.6.2

Question

请原谅我的英文

我在网站上工作，而且我使用了很多JS。今天我的脚本有问题。我正在使用这个网站：http://jsfiddle.net我在将脚本调整到我的网站时遇到了问题。

这是剧本：

$(document).ready(function() {
    $('#unseen1').click(function() {
        $(':radio').wrap("<span style='background-color:#009999' />");
        var score = 0;
        if ($('input[name=1a]:checked').val().length != 0) 
        {
            score++;
            $('input[name=1a]:checked').wrap("<span style='background-color:green' />");
        }
        else 
        {
            $('input[name=1a]:checked').wrap("<span style='background-color:red' />");
        }
        if ($('input[name=2a]:checked').val().length != 0) 
        {
            score++;
            $('input[name=2a]:checked').wrap("<span style='background-color:green' />");
        }
        else 
        {
            $('input[name=2a]:checked').wrap("<span style='background-color:red' />");
        }
        if ($('input[name=3a]:checked').val().length != 0) 
        {
            score++;
            $('input[name=3a]:checked').wrap("<span style='background-color:green' />");
        }
        else 
        {
            $('input[name=3a]:checked').wrap("<span style='background-color:red' />");
        }
        if ($('input[name=4a]:checked').val().length != 0) 
        {
            score++;
            $('input[name=4a]:checked').wrap("<span style='background-color:green' />");
        }
        else 
        {
            $('input[name=4a]:checked').wrap("<span style='background-color:red' />");
        }
        alert("Your score is " + (score * 25));
        if (score == 4) 
        {
            alert("Good work");
        }
    });
});​

它适用于此代码：

            <p> 1. How do the drivers help the operating system? </p>
                <input type="radio" name="1a" value="">a. They hold it's hand.</input><br>
                <input type="radio" name="1a" value="">b. They save data.</input><br>
                <input type="radio" name="1a" value="1">c. They tell how to contol devices.</input><br>
                <input type="radio" name="1a" value="">d. They send information to the CPU and recive information from the HDD.</input><br><br>


            <p> 2. What is uniqe about Windows 2000 and XP? </p>
                <input type="radio" name="2a" value="">a.They send information to the drivers. </input><br>
                <input type="radio" name="2a" value="">b. They come with an expansion card.  </input><br>
                <input type="radio" name="2a" value="">c. They don't recognize drivers.  </input><br>
                <input type="radio" name="2a" value="1">d.they come with a large driver database  </input><br><br>


            <p> 3. What is plug-and-play? </p>
                <input type="radio" name="3a" value="1">a. It's when you connect a device or an expansion card and don't need to install it's driver.</input><br>
                <input type="radio" name="3a" value="">b. It's when you plug a guitar and can play it on the computer.  </input><br>
                <input type="radio" name="3a" value="">c. It's a name of a driver. </input><br>
                <input type="radio" name="3a" value="">d. It's when you play the pluger.  </input><br><br>

            <p> 4. The newest Microsoft operating system has... </p>
                <input type="radio" name="4a" value="">a. The biggest drivers. </input><br>
                <input type="radio" name="4a" value="">b. The heavist programs.   </input><br>
                <input type="radio" name="4a" value="">c. The oldest drivers. </input><br>
                <input type="radio" name="4a" value="1">d. The most recent drivers.  </input><br><br>
                <center><button type="submit" id="unseen1" class= "orange" >check</button></center><br>

不幸的是，这个脚本只适用于1.7.1 JQuery，我的网站只能以1.6.2的方式工作（我有一个侧边栏，我正在使用隐藏和显示选项，似乎不适用于1.7。 1 JQuery）

如何更改脚本以便它可以在JQuery 1.6.2上运行？

如果您需要更多信息，请问我