gistfile1.js

    var searching = false;
    var search_string = '';
    $('#courseSearch').keyup(
            function(){
                if (this.value.length > 2) {
                    if (search_string != this.value) {
                        search_string = this.value;
                        clearTimeout(searching);
                        WDN.jQuery('#courseSearchResults').html('<img src="/wdn/templates_3.0/css/header/images/colorbox/loading.gif" alt="Loading search results" />');
                        searching = setTimeout(function(){fetchCourseSearchResults(search_string);}, 750);
                    }
                } else {
                    WDN.jQuery('#courseSearchResults').html('');
                }
            }
            );
    function fetchCourseSearchResults(q)
    {
        WDN.get(UNL_UGB_URL+'courses/search?q='+escape(q)+'&format=partial', null, function(content){WDN.jQuery('#courseSearchResults').html(content);});
    }