function statemanger (config) {
    var currstate = 0,
        statelist = config.statelist,
        statelen = statelist.length,
        running = false;


    var changestate = function (frame) {

        if( running ){
            return;
        }
        if( !statelist[frame] ){
            return;
        }
        if( currstate != frame ){
            statelist[currstate].out();
        }
        if( !statelist[frame].load ){
            statelist[frame].init();
            statelist[frame].load = true;
        }
        running = true;
        statelist[frame].reset && statelist[frame].reset();
        if(statelist[frame].delay){
            settimeout(function(){
                statelist[frame].view();
            },statelist[frame].delay)
        }else{
            statelist[frame].view();
        }
        
        settimeout(function(){
            running = false;
        },statelist[frame].time*1000);
        currstate = frame;
    }
    var scroll = function (delta) {
        console.log(delta)
        changestate(currstate+delta);
    }
    var bindwheel = function(){
        var mwdata = false;
        var t;
        $(document).bind("mousewheel", function (e, delta) {

            if (mwdata) {
                return;
            }
            mwdata = true;
            scroll(delta > 0 ? -1 : 1);
            settimeout(function () {
                mwdata = false;
            }, 1000);
        });
    }
    var bindkey = function(keyprev,keynext){
        var mwdata = false;
        var t;
        $(document).bind("keydown", function (e) {
            var e = e || window.event
            var keycode = e.which || e.keycode;

            if (!mwdata) {
                if (keycode == keynext) {
                    scroll(1);
                } else if (keycode == keyprev) {
                    scroll(-1);
                }
                mwdata = true;
                cleartimeout(t);
                t = settimeout(function () {
                    mwdata = false;
                }, 60);
            }
        });
    }
    var init = function(){
        config.key && bindkey(config.key.prev,config.key.next);
        config.wheel && bindwheel();
        config.init && config.init();
    }
    return {
        init : init,
        changestate : changestate,
        getstate : function(){
            return parseint(currstate);
        }
    }
}