gistfile1.txt

seajs.use(['jquery'],function($) {
        //hover
        var hover = (function () {
            function init () {
                var _item = $(".J_list");
                _item.on("mouseenter","dl",function(){
                    var _self = $(this);
                    _self.addClass("J_hover").siblings().removeClass("J_hover");
                });
            }
            return {
                init: init
            }
        })()

        //fixedSlidebar
        var fixedSlidebar = (function () {
            if(!window.XMLHttpRequest) {
                return false;
            }
            function init () {
                var _fixed = $(".J_fixed"),
                    _w = $(window),
                    fixedTop = _fixed.offset().top;
                    isScroll = false;

                _w.bind("scroll",function () {
                    var _self = $(this),
                    scrollTop = _self.scrollTop(),
                    top = _fixed.offset().top;
                 //   console.log(scrollTop,$(".feed-box-content").height() - $(".feed-footer").height())
                    if(scrollTop > top) {
                        _fixed.css({
                            "position": "fixed",
                            "top": 0
                        })
                    } else if(scrollTop <= fixedTop) {
                        isScroll = true;
                         _fixed.css({
                            "position": "static",
                        })

                    }
                    console.log(scrollTop,top,fixedTop);
                })
            }
            return {
                init: init
            }
        })()

    $(function() {
        var fixedObj =  $(".feed-box-content-sidebar");
        hover.init();
        fixedObj.stick_in_parent()
        //fixedSlidebar.init();
    });

});