<div id="random_story">$INFORMER$</div>
<button type="button" onclick="$('#random_story').load(' #random_story');">Обновить</button>

<div id="random_story">$INFORMER$</div>
<button type="button" onclick="getInformer();">Обновить</button>

<script>
var getInformer = function(){
     $.get(document.location.href, function(x){
         $('#random_story').html($('#random_story',x).html());
     });
     return false;
}
</script>