一个js，记录方便查询。

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var foucs_a = {

    createNew: function(){

        var cls = {

            par_id:'',

            cur_pos:1,

            cur_id:'',

            count:3,

            timer:null,

            _init: function(id, count) {

                var mouseover = function(evt) {

                    if(jQuery(this).attr('id') && !jQuery(this).hasClass("a")) {

                        // 分拆并得到该id

                        var tmp = this.id.split("_");

                        var _obj = cls;

                        _obj.cur_pos = tmp[tmp.length-1];

                        _obj.cur_id = this.id;

                        _obj.active();

                    }

                };

                var par_mouseover = function(evt) {

                    var _obj = cls;

                    clearInterval(_obj.timer);

                }

                var par_mouseout = function(evt) {

                    var _obj = cls;

                    clearInterval(_obj.timer);

                    _obj.timer = setInterval(function(){_obj.next()}, 2000);

                }

                this.par_id = id;

                this.count = count;

                jQuery("#"+id+" li").bind('mouseover', mouseover);

                jQuery("#"+id+"_cnt").bind('mouseover', par_mouseover);

                jQuery("#"+id+"_cnt").bind('mouseout', par_mouseout);

 

                var me = this;

 

                this.timer = setInterval(function(){me.next()}, 2000);

            },

            next: function() {

                this.cur_pos++;

                if (this.cur_pos>this.count) {this.cur_pos = 1};

                this.active();

                //alert(this.cur_pos);

            },

            active: function() {

                jQuery("#"+this.par_id+" li").removeClass("a");

                jQuery("#"+this.par_id+"_"+this.cur_pos).addClass("a");

                jQuery("#"+this.par_id+"_cnt .bttab_one").hide();

                jQuery("#"+this.par_id+"_"+this.cur_pos+"_cnt").show();

            }

        };

 

        return cls;

    }

};