var request = new Request.HTML({
    url: 'nyttinnehall.html',
    method: 'get',
    onRequest: function(){
    },
    onSuccess: function(responseTree){
        responseTree[0].inject(document.body);
    },
    onFailure: function(){
        alert('det blev fel, säg till admin att skärpa sig');
    }
});
request.send();

// nyttinnehall.html
<div id="addImages">
    <img src="" />
</div>