If you're looking for an answer you'll have to explain exactly what it is you want.
Currently your post doesn't make a whole lot of sense. You say you want to simply reload a <div> on your page (without reloading the page itself), however you don't actually want to change the content of the <div>. And thus I propose the question: why reload the <div>?
It would seem that by definition something on the page (at least within the source) would have to change in order for any sort of reload action to take place on an element. And ultimately it still comes down to "why?" if you aren't going to change anything on the page. I am almost certain your answer will involve AJAX, but I can't tell you anything beyond that without knowing why you're trying to 'reload' something, except that it doesn't change (which kind of defeats the purpose).