Reigel's demo page

HTML

<div class="before">
    <h1>before</h1>
    <label for='checkbox_elem'>
        Links to <a href='somepage.php' target='anotherwindow'>another page.</a>
    </label> <br />
    <label for='checkbox_elem'>
        Links to <a href='somepage.php' target='anotherwindow'>another page.</a>
    </label> <br />
    <label for='checkbox_elem'>
        Links to <a href='somepage.php' target='anotherwindow'>another page.</a>
    </label>
</div>
<div class="after">
    <h1>after</h1>
    <label for='checkbox_elem'>
        Links to <a href='somepage.php' target='anotherwindow'>another page.</a>
    </label> <br />
    <label for='checkbox_elem'>
        Links to <a href='somepage.php' target='anotherwindow'>another page.</a>
    </label> <br />
    <label for='checkbox_elem'>
        Links to <a href='somepage.php' target='anotherwindow'>another page.</a>
    </label>
</div>

CSS

label {
    border: 1px solid blue;
}
a {
    text-decoration: none;
}
h1 {
    font-weight: bold;
    margin-top: 10px;
}

JavaScript

$(document).ready(function(){ 
    $('.after label').find('a').each(function(){
        var $anchor = $(this);        
        $(this).closest('label').after($anchor);
    });
});