var AdEffects = {   
    _timer : null,   
    _items : [],   
    _container : null,   
    _index : 0,   
    _imgs : [],   
    intervalTime :4000,  
    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";   
        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; padding:0;width:"+w+"px;position:absolute;z-index:999;right:5px;FILTER:Alpha(Opacity=20,FinishOpacity=70, Style=1);overflow: hidden;bottom:2px; right:2px;height:13px;border-right:0px solid #f00;";  
       //按钮
        var liStyle = "margin-right:1px;list-style-type: none; padding:0; float:right;";   
        //  按钮
        var baseSpacStyle = "clear:both; display:block; width:12px;line-height:12px; font-size:12px; FONT-FAMILY:'宋体';opacity: 0.5;";   
        baseSpacStyle += "border:1px solid #fff;";   
        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=\"AdEffects.mouseOver(this);\" onmouseout=\"AdEffects.mouseOut(this);\" style=\""+spanStyle+"\" onclick=\"AdEffects.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=\"_self\" style=\""+linkStyle+"\"></a><ul style=\""+ulStyle+"\">"+ulHTML+"</ul>";   
        this._container.innerHTML = html;   
        //初始化时显示的数据  
        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( "AdEffects.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 );   
    },  
    play : function( index ){   
        if( index!=null ){   
           this._index = index;   
           clearInterval( this._timer );   
           this._timer = setInterval( "AdEffects.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; padding:0; float:right;";   
        //设置数字样式
        var baseSpacStyle = "clear:both; display:block;width:12px;line-height:12px; font-size:12px; vertical-align:middle; FONT-FAMILY:'宋体'; opacity: 0.5;";   
        baseSpacStyle += "border:1px solid #fff;";   
        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=\"AdEffects.mouseOver(this);\" onmouseout=\"AdEffects.mouseOut(this);\" style=\""+spanStyle+"\" onclick=\"AdEffects.play("+i+");return false;\" herf=\"javascript:;\" title=\"" + this._items[i].title + "\">" + (i+1) + "</span>";   
            ulHTML += "</li>";   
        }   
        this._container.getElementsByTagName("UL")[0].innerHTML = ulHTML;           
    },   
    mouseOver : function(obj){   
        var i = parseInt( obj.innerHTML );   
        if( this._index!=i-1){ obj.style.color = "#ff0000";}   
    },   
    mouseOut : function(obj){obj.style.color = "#fff";}   
}