gistfile1.js

<!-- Import jQuery. -->
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js" type="text/javascript"></script>

<script type="text/javascript">
    function fetchAndPrintPosts(id,num,tag)
    {
        // Read data from Tumblr, this creates the variable tumblr_api_read.
        jQuery.ajax({
            type: "GET",
            url : "http://staff.tumblr.com/api/read/json?num=" + num + "&filter=text&tagged=" + tag,
            dataType : "script",
            success : function() { printPosts(id); }
        });
    }
    function printPosts(id)
    {
        var element_to_append_to = document.getElementById(id);
        var posts = tumblr_api_read["posts"];
        ...
    }
    fetchAndPrintPosts('latest_events',50,'events');
    fetchAndPrintPosts('latest_press',50,'press');
</script>