[jQuery] DT selector not applying to last DT in DL tag on IE7

[Reno]

I have a definition list (<dl class="faqList">) and i'm adding a click
function to each <dt> tag in the list.  There are about 6 or 7 <dt></
dt><dd></dd> pairs in the list.

For some reason in IE7, the click function i've made does not apply to
the last <dt> tag in the list.  Can anyone explain why?



Here is my javascript code:

$(document).ready(function () {
        //Toggle Faq Answers
        $(".faqList dd").hide();
        $(".faqList dt").add("dd").append("<span class=\"hr\"></span>").end
().click(function(){
                $(".faqList 
dt.isopen").removeClass("isopen").find("span").toggle
(300).end().next().toggle(300);
                $(this).addClass("isopen").find("span").toggle(300).end().next
().toggle(300);
        });

});

If you need more info please let me know.  Thank You.