/**************************************************   
名称: 图片轮播类   
创建时间: 2007-11-12   
示例:   
        页面中已经存在名为imgPlayer(或者别的ID也行)的节点.   
        PImgPlayer.addItem( "test", "http://kxgw8.cn", "http://kxgw8.cn/images/wy.jpg");   
        PImgPlayer.addItem( "test2", "http://kxgw8.cn", "http://kxgw8.cn/images/wy.jpg");   
        PImgPlayer.addItem( "test3", "http://kxgw8.cn", "http://kxgw8.cn/images/wy.jpg");   
        PImgPlayer.init( "imgPlayer", 200, 230 );   
备注:   
        适用于一个页面只有一个图片轮播的地方.   
***************************************************/
var PImgPlayer = {
    _timer: null,
    _items: [],
    _container: null,
    _index: 0,
    _imgs: [],
    _article: [],
    intervalTime: 3500,        //轮播间隔时间   
    init: function (objID, w, h, time)
    {
        this.intervalTime = time || this.intervalTime;
        this._container = document.getElementById(objID);
        this._container.style.display = "block";
        this._container.style.width = w + "px";
        this._container.style.height = h + "px";
        this._container.style.position = "relative";
        this._container.style.overflow = "hidden";
        //this._container.style.border = "1px solid #fff";   
        var linkStyle = "display: block; TEXT-DECORATION: none;";
        if (document.all)
        {
            linkStyle += "FILTER:";
            linkStyle += "progid:DXImageTransform.Microsoft.Barn(duration=0.5, motion='out', orientation='vertical') ";
            // linkStyle += "progid:DXImageTransform.Microsoft.Barn ( duration=0.5,motion='out',orientation='horizontal') ";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Blinds ( duration=0.5,bands=10,Direction='down' )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.CheckerBoard()";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Fade(duration=0.5,overlap=0)";   
            // linkStyle += "progid:DXImageTransform.Microsoft.GradientWipe ( duration=1,gradientSize=1.0,motion='reverse' )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Inset ()";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=PLUS,motion=out )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=PLUS,motion=in )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=DIAMOND,motion=in )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=SQUARE,motion=in )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=0.5,irisStyle=STAR,motion=in )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.RadialWipe ( duration=0.5,wipeStyle=CLOCK )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.RadialWipe ( duration=0.5,wipeStyle=WEDGE )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.RandomBars ( duration=0.5,orientation=horizontal )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.RandomBars ( duration=0.5,orientation=vertical )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.RandomDissolve ()";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Spiral ( duration=0.5,gridSizeX=16,gridSizeY=16 )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Stretch ( duration=0.5,stretchStyle=PUSH )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Strips ( duration=0.5,motion=rightdown )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Wheel ( duration=0.5,spokes=8 )";   
            // linkStyle += "progid:DXImageTransform.Microsoft.Zigzag ( duration=0.5,gridSizeX=4,gridSizeY=40 ); width: 100%; height: 100%";   
        }
        //   
        var ulStyle = "margin:0;width:" + w + "px;position:absolute;z-index:999;right:5px;FILTER:Alpha(Opacity=50,FinishOpacity=50, Style=1);bottom:6px;*+bottom:1px;_bottom:1px;height:16px; border-right:1px solid #fff;";
        //   
        var liStyle = "margin:0;list-style-type: none; margin:0;padding:0; float:right;";
        //   
        var baseSpacStyle = "clear:both; display:block; width:23px;line-height:18px; font-size:12px; FONT-FAMILY:'宋体';opacity: 0.6;";
        baseSpacStyle += "border:1px solid #fff;border-right:0;";
        baseSpacStyle += "color:#fff;text-align:center; cursor:pointer; ";
        //   
        var ulHTML = "";
        for (var i = this._items.length - 1; i >= 0; i--)
        {
            var spanStyle = "";
            if (i == this._index)
            {
                spanStyle = baseSpacStyle + "background:#ff0000;";
            } else
            {
                spanStyle = baseSpacStyle + "background:#000;";
            }
            ulHTML += "<li style=\"" + liStyle + "\">";
            ulHTML += "<span onmouseover=\"PImgPlayer.mouseOver(this);\" onmouseout=\"PImgPlayer.mouseOut(this);\" style=\"" + spanStyle + "\" onclick=\"PImgPlayer.play(" + i + ");return false;\" herf=\"javascript:;\" title=\"" + this._items[i].title + "\">" + (i + 1) + "</span>";
            ulHTML += "</li>";
        }
        //   
        var html = "<a href=\"" + this._items[this._index].link + "\" title=\"" + this._items[this._index].title + "\" target=\"_blank\" style=\"" + linkStyle + "\"></a><ul style=\"" + ulStyle + "\">" + ulHTML + "</ul>";
        this._container.innerHTML = html;
        var link = this._container.getElementsByTagName("A")[0];
        link.style.width = w + "px";
        link.style.height = h + "px";
        link.style.background = 'url(' + this._items[0].img + ') no-repeat center center';
        //   
        this._timer = setInterval("PImgPlayer.play()", this.intervalTime);
    },
    addItem: function (_title, _link, _imgURL)
    {
        this._items.push({ title: _title, link: _link, img: _imgURL });
        var img = new Image();
        img.src = _imgURL;
        this._imgs.push(img);
    },
    addArticle: function (_title, _content, _url, _moretxt)
    {
        this._article.push({ title: _title, content: _content, url: _url, moretxt: _moretxt })
    },
    play: function (index)
    {
        if (index != null)
        {
            this._index = index;
            clearInterval(this._timer);
            this._timer = setInterval("PImgPlayer.play()", this.intervalTime);
        } else
        {
            this._index = this._index < this._items.length - 1 ? this._index + 1 : 0;
        }
        var link = this._container.getElementsByTagName("A")[0];
        if (link.filters)
        {
            var ren = Math.floor(Math.random() * (link.filters.length));
            link.filters[ren].Apply();
            link.filters[ren].play();
        }
        link.href = this._items[this._index].link;
        link.title = this._items[this._index].title;
        link.style.background = 'url(' + this._items[this._index].img + ') no-repeat center center';
        //   
        var liStyle = "margin:0;list-style-type: none; margin:0;padding:0; float:right;";
        var baseSpacStyle = "clear:both; display:block; width:23px;line-height:18px; font-size:12px; FONT-FAMILY:'宋体'; opacity: 0.6;";
        baseSpacStyle += "border:1px solid #fff;border-right:0;";
        baseSpacStyle += "color:#fff;text-align:center; cursor:pointer; ";
        var ulHTML = "";
        for (var i = this._items.length - 1; i >= 0; i--)
        {
            var spanStyle = "";
            if (i == this._index)
            {
                spanStyle = baseSpacStyle + "background:#ff0000;";
            } else
            {
                spanStyle = baseSpacStyle + "background:#000;";
            }
            ulHTML += "<li style=\"" + liStyle + "\">";
            ulHTML += "<span onmouseover=\"PImgPlayer.mouseOver(this);\" onmouseout=\"PImgPlayer.mouseOut(this);\" style=\"" + spanStyle + "\" onclick=\"PImgPlayer.play(" + i + ");return false;\" herf=\"javascript:;\" title=\"" + this._items[i].title + "\">" + (i + 1) + "</span>";
            ulHTML += "</li>";
        }
        this._container.getElementsByTagName("UL")[0].innerHTML = ulHTML;
        if (!this._txtContainer)
        {
            this._txtContainer = document.getElementById("txtPlayer");
        }
        var txt = this._article[this._index];
        var txtHTML = new Array("<div class=\"newsTopic\">", txt.title, "</div>");
        txtHTML.push("<p>");
        txtHTML.push(txt.content);
        txtHTML.push("</p>");
        txtHTML.push("<p class=\"hRight\">");
        txtHTML.push("<a class=\"redText\" href=\"");
        txtHTML.push(txt.url);
        txtHTML.push("\">");
        txtHTML.push(txt.moretxt);
        txtHTML.push("&gt;</a>");
        txtHTML.push("</p>");
        this._txtContainer.innerHTML = txtHTML.join("");
    },
    mouseOver: function (obj)
    {
        var i = parseInt(obj.innerHTML);
        if (this._index != i - 1)
        {
            obj.style.color = "#ff0000";
        }
    },
    mouseOut: function (obj)
    {
        obj.style.color = "#fff";
    }
}