脚本只能在RWD主题中工作，不能在默认主题上工作

我有一个问题，我在我的magento网站上使用默认主题，并使用这个脚本。它只适用于RWD主题。我试着找一些关于它的信息，但什么也没找到。请帮助，如果你知道的东西，以帮助我的工作在默认主题这个脚本。

<div class="block block-subscribe">
<div class="block-title">
    <strong><span><?php echo $this->__('Newsletter') ?></span></strong>
</div>
<div id="feedback" style="display:none" class="mini-newsletter">
    Thank you for subscribing to our newsletter!
</div>
<form action="<?php echo $this->getFormActionUrl() ?>" name="newsletter-form" id="newsletter-form" method="post">
    <div class="block-content">
        <div class="form-subscribe-header">
            <label for="newsletter"><?php echo $this->__('Sign Up for Our Newsletter:') ?></label>
        </div>
        <div class="input-box">
            <input type="text" placeholder="Email address" name="email" id="newsletter" title="<?php echo $this->__('Subscribe to Our Newsletter') ?>" class="required-entry input-subscribe" style="width:178px;" />
            <div class="error-news-msg" id="error-news-msg" style="display:none;">Please enter a valid email address.</div>
        </div>
        <div class="actions">
            <button type="button" title="<?php echo $this->__('Subscribe') ?>" onclick="myfunc();" class="button">
                <span><span>Subscribe</span></span>
            </button>
        </div>
    </div>
</form>

<script type="text/javascript">
    function myfunc()
    {
        var newsletterSubscriberFormDetail = new VarienForm('newsletter-form');
        var form_email = $('newsletter').getValue();
        var params_form = $('newsletter-validate-detail');
        //alert(params_form);
        if(echeck(form_email))
        {
            //alert(form_email);
            //alert(Form.serialize($('newsletter-validate-detail')));
            new Ajax.Updater({ success: 'newsletter-form' }, '<?php echo $this->getUrl('newsletter/subscriber/new') ?>', {
                asynchronous:true, evalScripts:false,
                parameters: { email: form_email },
                onComplete:function(request, json){Element.hide('newsletter-form');Element.show('feedback');},
                onLoading:function(request, json){Element.hide('news-loader');}
            });   
        }
        else
        {
            //alert(form_email);
            return false;
        }    
    }   
    function echeck(str) {    
        var at="@";
        var dot=".";
        var lat=str.indexOf(at);
        var lstr=str.length;
        var ldot=str.indexOf(dot);
        if (str.indexOf(at)==-1){
            //alert("Invalid E-mail ID")
            goProcedural();
            return false
        }
        if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
            //alert("Invalid E-mail ID")
            goProcedural();
            return false
        }
        if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
            //alert("Invalid E-mail ID")
            goProcedural();
            return false
        }
        if (str.indexOf(at,(lat+1))!=-1){
            //alert("Invalid E-mail ID")
            goProcedural();
            return false
        }
        if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
            //alert("Invalid E-mail ID")
            goProcedural();
            return false
        }
        if (str.indexOf(dot,(lat+2))==-1){
            //alert("Invalid E-mail ID")
            goProcedural();
            return false
        }
        if (str.indexOf(" ")!=-1){
            //alert("Invalid E-mail ID")
            goProcedural();
            return false
        }    
        return true
    }
    function goProcedural()
    {
        Element.show('error-news-msg');
        Element.hide.delay(5, 'error-news-msg');
    }
</script>