Simple ajax form using javascript no jQuery

I'm working with a form for which the mark-up I can't change & can't use jQuery. Currently the form post the results to a new window. Is it possible to change this to an ajax form so that the results displays on submit instead without altering any mark-up? Pulling the results (mark-up) from the results page back to the form page.

Here is the mark-up for the form.

<form class="form-poll" id="poll-1225962377536" action="/cs/Satellite" target="_blank">
<div class="form-item">
    <fieldset class="form-radio-group">
        <legend><span class="legend-text">What mobile phone is the best?</span></legend>
                <div class="form-radio-item">
                    <input type="radio" class="radio" value="1225962377541" name="option" id="form-item-1225962377541">
                    <label class="radio" for="form-item-1225962377541">
                        <span class="label-text">iPhone</span>
                    </label>
                </div><!-- // .form-radio-item -->
                <div class="form-radio-item">
                    <input type="radio" class="radio" value="1225962377542" name="option" id="form-item-1225962377542">
                    <label class="radio" for="form-item-1225962377542">
                        <span class="label-text">Android</span>
                    </label>
                </div><!-- // .form-radio-item -->
                <div class="form-radio-item">
                    <input type="radio" class="radio" value="1225962377543" name="option" id="form-item-1225962377543">
                    <label class="radio" for="form-item-1225962377543">
                        <span class="label-text">Symbian</span>
                    </label>
                </div><!-- // .form-radio-item -->
                <div class="