I have a page with the following two divs:

<div id="searchResults">
</div>

<div class="postSearchOptions" style="display: none;">
</div>

Is there any way that I can make the "postSearchOptions" div appear when the "searchResults" div is updated by an AJAX call? I don't control the AJAX calls and I want to detect any change in the "searchResults" div.

I tried writing the following JQuery code, but then realized that it requires Jquery 1.4 and I only have 1.3:

$("#searchResults").live("change", function() {
    $(".postSearchOptions").css("display", "inline");
});

Is there any way to catch the event of the searchResults div changing using either standard JavaScript or Jquery 1.3? Thanks!