// JavaScript Document
var PImgPlayer = {
	_timer : null,
	_items : [],
	_container : null,
	_index : 0,
	_imgs : [],
	intervalTime : 5000, //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.GradientWipe ( duration=1,gradientSize=1.0,motion='out' )";
		 linkStyle += "progid:DXImageTransform.Microsoft.GradientWipe ( duration=1,gradientSize=1.0,motion='reverse' )";
		}
	//
	var ulStyle = "margin:0; width:"+w+"px; position:absolute; z-index:999; right:8px; FILTER:Alpha(Opacity=80,FinishOpacity=100, Style=1);overflow: hidden; bottom:4px; height:24px;";  
	//改动
	var liStyle = "margin:0;list-style-type: none; margin:0;padding:0; float:right;";
	//
	var baseSpacStyle = "clear:both; display:block; width:23px;line-height:16px; font-size:12px; FONT-FAMILY:'宋体';opacity: 0.6; ";
	baseSpacStyle += "border:1px solid #fff;";
	baseSpacStyle += "color:#fff;text-align:center; v-align:middle; 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+"\"  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 );
	},
	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:16px; font-size:12px; FONT-FAMILY:'宋体'; opacity: 0.6;";
	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=\"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; 
	},
	mouseOver : function(obj){
	var i = parseInt( obj.innerHTML );
	if( this._index!=i-1){
	 obj.style.color = "#ff0000";
	}
	},
	mouseOut : function(obj){
	obj.style.color = "#fff";
	}
}