大神帮忙看看有没有写错， 用$("div").unbind("click "dblclick"); 和 $("div").unbind("click").unbind("dblclick");试了，点击“移除事件”按钮时都没反应，求指点！

<script type="text/javascript">
            $(function () {
                $("div").bind("click",
                function () {
                    $(this).removeClass("backcolor").addClass("color");
                }).bind("dblclick", function () {
                    $(this).removeClass("color").addClass("backcolor");
                })
                $("#btntest").bind("click", function () {
                    $("div").unbind("click "dblclick"); // $("div").unbind("click").unbind("dblclick");                        

              $(this).attr("disabled", "true");
                });
            });
        </script>