How to find out the previously selected navigation link in jQuery?

I have a navigation set up using ULs, LIs, and As. The hightlighted/selected tab's anchor has a class of selected. When a new nav link is clicked, how can I find out what the ID of the previously sele开发者_JAVA百科cted anchor's tab is?

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try this:

html

<ul>
    <li><a href="#">link1</a></li>
    <li><a href="#">link2</a></li>
</ul>

js

$("a").click(function() {
   var $current = $(this);
   var $prev = $current.closest("ul").find("a.selected");
    if($prev.length) {
       alert($prev.text())   
       $prev.removeClass("selected");
    }
    $current.addClass("selected");
    return false;
});

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myId = $('a.selected').attr('id')