var filter_hide = true;
var filter_name;
jQuery(function($) {

    /**
     *  @param jquery对象   obj
     *  @param String       upClass  正常状态class名
     *  @param String       downClass  鼠标按下状态class名
     */
    function mouse_down_up(obj,upClass,downClass) {
        obj.bind("mousedown mouseup",function(e){
            if(e.type == "mousedown"){
                $(this).removeClass(upClass).addClass(downClass);
            }else{
                $(this).removeClass(downClass).addClass(upClass);
            }
        });
    }
});