!(function (global, $, factory) {

    typeof exports == "object" && typeof module != "undefined" ? module.exports = factory() : typeof define === 'function' && define.amd ? define(factory) : (global.LandscapeSlider = factory());
})(this, jQuery, function () {

    var LandscapeSlider = function (options) {
        if (!(this instanceof LandscapeSlider)) {
            console.log("LandscapeSlider 是一个构造函数，应该用new关键字调用");
            return;
        }

        var _DEFALUTS_ = {
            g_bMoveLeft: true,
            g_oTimer: null,
            g_oTimerOut: null,
            g_bPause: true,
            g_iPauseTime: 1000,
            g_iSpeed: 2,
            id: "",
            limit: 0
        }
        $.extend(true, _DEFALUTS_, options || {});

        var oDiv = document.getElementById(_DEFALUTS_.id);

        if (!oDiv) return;

        var oUl = oDiv.getElementsByTagName('ul')[0];

        var aLi = oDiv.getElementsByTagName('li');


       // var liHeight=$(aLi[0]).outerHeight(true));
        if (_DEFALUTS_.limit != 0) {
            if (aLi.length <= _DEFALUTS_.limit) {
                return;
            }
        }
        var i = 0;

        var str = oUl.innerHTML + oUl.innerHTML;

        oUl.innerHTML = str;
        //oUl.style.height = $(aLi[0]).outerHeight(true) * aLi.length + 'px';
        oUl.style.width=$(aLi[0]).outerWidth(true)*aLi.length+'px';

        for (i = 0; i < aLi.length; i++) {

            aLi[i].onmouseover = function () {
                stopMove();
            };

            aLi[i].onmouseout = function () {
                startMove(_DEFALUTS_.g_bMoveLeft);
            };
        }

        startMove(true);

        function startMove(bLeft) {
            _DEFALUTS_.g_bMoveLeft = bLeft;

            if (_DEFALUTS_.g_oTimer) {
                clearInterval(_DEFALUTS_.g_oTimer);
            }
            _DEFALUTS_.g_oTimer = setInterval(doMove, 30);
        }

        function stopMove() {
            clearInterval(_DEFALUTS_.g_oTimer);
            _DEFALUTS_.g_oTimer = null;
        }

        function doMove()
        {
            var oDiv=document.getElementById(_DEFALUTS_.id);
            var oUl=oDiv.getElementsByTagName('ul')[0];
            var aLi=oUl.getElementsByTagName('li');
            
            var l=oUl.offsetLeft;
            
            if(_DEFALUTS_.g_bMoveLeft)
            {
                l-=_DEFALUTS_.g_iSpeed;
                if(l<=-oUl.offsetWidth/2)
                {
                    l+=oUl.offsetWidth/2;
                }
            }
            else
            {
                l+=_DEFALUTS_.g_iSpeed;
                if(l>=0)
                {
                    l-=oUl.offsetWidth/2;
                }
            }
            
            if(_DEFALUTS_.g_bPause)
            { 
                if(Math.abs(l-Math.round(l/aLi[0].offsetWidth)*aLi[0].offsetWidth)<Math.ceil(_DEFALUTS_.g_iSpeed/2))
                {
                    stopMove();
                    _DEFALUTS_.g_oTimerOut=setTimeout
                    (
                        function ()
                        {
                            startMove(_DEFALUTS_.g_bMoveLeft);
                        }, _DEFALUTS_.g_iPauseTime
                    );
                    
                    l=Math.round(l/aLi[0].offsetWidth)*aLi[0].offsetWidth;
                }
            }
            
            oUl.style.left=l+'px';
        }


    }



    return LandscapeSlider;

})