<script>
$.ajax({
    url: 'http://...',
    success: function(data) {
        $('#target').html(data);
    }
});
</script>
<!-- In IE8, if data is the following -->
<div>
    <header>
        <h1>Something</h1>
    </header>
    <section>
    </section>
</div>
<!-- #target gets filled with -->
<div>
    <h1>Something</h1>
    </header/>
    <section/>
</div>