<li><h3><a href="#" target="_blank" id="feature1" name="feature1">What do I know about javascript?</a></h3>
<div class="check_list_wrap feature1">Not a lot, apparently.</div>
</li>

<script type="text/javascript">
    $(function() {
    $("#listfeatures h3 a").toggle(function(){
        $(this).addClass("check_list_selected");
    }, function () {
        $(this).removeClass("check_list_selected");
    });
        $("#listfeatures h3 a").click(function() {
            $("."+this.id).slideToggle('fast');
                return false;
        });
    });
</script>

$(document).ready(function() {
    if(location.hash) {
        var id = location.hash.slice(1);    //Get rid of the # mark
        var elementToShow = $("#" + id);    //Save local reference
        if(elementToShow.length) {                   //Check if the element exists
            elementToShow.slideToggle('fast');       //Show the element
            elementToShow.addClass("check_list_selected");    //Add class to element (the link)
        }
    }
});