/**
 * =========================================================================
 * 本程序可自由复制、修改、传播，不得删除以下信息。如用于商业用途须经原作者同意方可使用。
 * =========================================================================
 * 程序名称：ForceWindow(@iClass.JS)
 * 描　　述：网页上的图片幻灯片。
 * 版　　本：1.0.0
 * 创建时间：2005年4月23日
 * 修改时间：2005年4月23日
 * 作　　者：钟钟
 * 邮箱地址：zhong@iecn.net
 * 版权声明：本程序属于iClass.JS，版权归作者所有。
 * 讨论地址：http://www.iecn.net/forum/showthread.php?threadid=16975
 * 有关iClass计划详见：http://www.iecn.net/forum/showthread.php?threadid=14811
 * =========================================================================
 */
 /**
  * 修　　改：ispfcn@163.com
  * 修改时间：2006年3月9日
  * 修改内容：1.新增图片链接功能
  *           2.新增设置图片边框功能
  *           3.新增是否自动开始播放
  *           4.新增是否循环播放功能
  */


//构造ImageSlide类
function ImageSlide () {
	if((/MSIE\s*[5-9]/).test(navigator.appVersion)) {
		this.count = 0;
		this.timer = null;
		this.first = new Object();
		this.frms = new Array();
		this.urls = new Array();
		this.imgs = new Array();
		this.imageBorder = 0;
		this.width = 640;
		this.height = 480;
		this.boxId = "imageSlideBox";
		this.delay = 5;
		this.autoStart = true;
		this.autoPlay = true;
		this.displayLink = true;
		this.displayLoop = true;
		this.transform = 23;
		/**
		 * 播放切换效果说明
		 * --------------
		 *  0. 矩形缩小
		 *  1. 矩形扩大
		 *  2. 圆形缩小
		 *  3. 圆形扩大
		 *  4. 从下到上
		 *  5. 从上到下
		 *  6. 从左到右
		 *  7. 从右到左
		 *  8. 竖百叶窗
		 *  9. 横百叶窗
		 * 10. 错位横百叶窗
		 * 11. 错位竖百叶窗
		 * 12. 点扩散
		 * 13. 两边到中间
		 * 14. 中间到两边
		 * 15. 中间到上下
		 * 16. 上下到中间
		 * 17. 右下到左上
		 * 18. 右上到左下
		 * 19. 左上到右下
		 * 20. 左下到右上
		 * 21. 横条
		 * 22. 竖条
		 * 23. 随机
		 * --------------
		 */
	}
	else {
		alert("请使用IE5或IE5以上版本的浏览器使用本程序！");
	}
}
with(ImageSlide)
{
	prototype.constructor = ImageSlide;
}
//加入一个或多个URL
//pushUrl(sUrl1 [, sUrl2 [, sUrl3 [, ...]]])
ImageSlide.prototype.pushUrls = function () {
	for (var i = 0; i<arguments.length; i++)
	{
		this.urls.push(arguments[i]);
	}
}

//加入一张或多张图片（传入一个或多个图片路径）
//pushImg(sPath1 [, sPath2 [, sPath3 [, ...]]])
ImageSlide.prototype.pushImgs = function () {
	for (var i = 0; i < arguments.length; i++)
		this.imgs.push(arguments[i]);
}

//设置图片播放容器的长宽
ImageSlide.prototype.setSize = function (nWidth, nHeight) {
	this.width = nWidth;
	this.height = nHeight;
}

//设置图片播放容器的ID
ImageSlide.prototype.setBoxId = function (sBoxId) {
	this.boxId = sBoxId;
}

//设置是否自动开始播放
ImageSlide.prototype.setAutoStart = function (bAutoStart) {
	this.autoStart = bAutoStart;
}

//设置是否自动播放
ImageSlide.prototype.setAutoPlay = function (bAutoPlay) {
	this.autoPlay = bAutoPlay;
}

//设置是否为播放提供链接
ImageSlide.prototype.setDisplayLink = function (bDisplayLink) {
	this.displayLink = bDisplayLink;
}

//设置图片的显示边框
ImageSlide.prototype.setImageBorder = function (nImageBorder) {
	this.imageBorder = nImageBorder;
}

//设置是否循环播放
ImageSlide.prototype.setDisplayLoop = function (bDisplayLoop){
	this.displayLoop = bDisplayLoop;
}

//设置自动播放的延时秒数
ImageSlide.prototype.setDelay = function (nSeconds) {
	this.delay = nSeconds;
}

//设置播放的切换效果（0-23的整数）
ImageSlide.prototype.setTransform = function (nTransform) {
	this.transform = nTransform;
}

//显示
ImageSlide.prototype.display = function () {
	var boxStr = "<div style='width:" + this.width + "px;height:" + this.height + "px;' ";
	boxStr += "id='"  + this.boxId + "'><div ";
	if (this.autoPlay)
		boxStr += "onclick='window.imageSlide.play();window.imageSlide.timerPlay();'";
	else
		boxStr += "onclick='window.imageSlide.play();'";
	boxStr += "style='word-break:keep-all;width:100%;height:100%;background-color:#EEEEEE;'>";
	if (this.autoPlay)
		boxStr += "<br />　点击此处开始进行自动播放……";
	else
		boxStr += "<br />　点击此处开始播放，播放时单击播放下一张……";
	boxStr += "</div>";
	var img;
	var transform = this.transform;
	for (var i = 0; i < this.imgs.length; i++) {
		if (this.transform >= 23)
			var transform = Math.floor(Math.random()*23);
		if (this.displayLink&&i<this.urls.length){
			boxStr += "<a href='" + this.urls[i] + "' target='_blank'>";
		}
		else{
			boxStr += "<a>";
		}
		boxStr += "<img src='" + this.imgs[i] + "' border='"+this.imageBorder+"' style='display:none;width:";
		boxStr += this.width + ";height:" + this.height + "px;height:px;filter:";
		boxStr += "revealTrans(transition=" + transform + ",duration=1);'";
		if (!this.autoPlay)
			boxStr += "' onclick='window.imageSlide.play();' alt='点击播放下一张'";
		boxStr += " /></a>";
	}
	boxStr += "</div>";
	document.writeln(boxStr);
	var box = document.getElementById(this.boxId);
	this.first = box.childNodes[0];
	this.frms = box.getElementsByTagName("IMG");
	if (this.autoStart){
		if (this.autoPlay){
			window.imageSlide.play();
			window.imageSlide.timerPlay();
		}
		else{
			window.imageSlide.play();
		}
	}
}

//播放
ImageSlide.prototype.play = function () {
	if (window.imageSlide.imgs.length) {
		window.imageSlide.first.style.display = "none";
		if (window.imageSlide.count >= window.imageSlide.imgs.length) {
			if(window.imageSlide.displayLoop==true)
			{
				window.imageSlide.frms[window.imageSlide.count-1].style.display = "none";
				window.imageSlide.first.style.display = "none";
				window.imageSlide.frms[0].filters[0].apply();
				window.imageSlide.frms[0].style.display = "block";
				window.imageSlide.frms[0].filters[0].play();
			}
			else
			{
				alert("播放完毕！");
				window.imageSlide.frms[window.imageSlide.count-1].style.display = "none";
				window.imageSlide.first.style.display = "block";
				window.imageSlide.first.innerHTML = "<br />　点击此处再次进行播放！";
				clearInterval(window.imageSlide.timer);
			}
			window.imageSlide.count = 0;
		}
		else if (window.imageSlide.count == 0 ) {
			window.imageSlide.first.style.display = "none";
			window.imageSlide.frms[0].filters[0].apply();
			window.imageSlide.frms[0].style.display = "block";
			window.imageSlide.frms[0].filters[0].play();
		}
		else {
			window.imageSlide.frms[window.imageSlide.count-1].style.display = "none";
			window.imageSlide.frms[window.imageSlide.count].filters[0].apply();
			window.imageSlide.frms[window.imageSlide.count].style.display = "block";
			window.imageSlide.frms[window.imageSlide.count].filters[0].play();
		}
		window.imageSlide.count++;
	}
	else {
		alert("你没有放入任何图片，无法进行播放！");
	}
}

//连续播放
ImageSlide.prototype.timerPlay = function () {
	this.timer = setInterval(this.play, this.delay * 1000);
}

//实例化一个ImageSlide对象imageSlide并将其做为window对象的一个子对象
window.imageSlide = new ImageSlide();