//共有幾張圖
	var myImg = new Array(
				["gallery/sample01/1.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/tour/1.JPG"],
				["gallery/sample01/2.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/tour/2.JPG"],
				["gallery/sample01/3.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/tour/3.JPG"],
				["gallery/sample01/4.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/tour/4.JPG"],
				["gallery/sample01/5.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/tour/5.JPG"],
				["gallery/sample01/s12.jpg","140.117.31.26"],
				["gallery/sample01/s13.jpg","140.117.31.26"],
				["gallery/sample01/s14.jpg","140.117.31.26"],
				["gallery/sample02/1.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/workshop/1.JPG"],
				["gallery/sample02/2.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/workshop/2.JPG"],
				["gallery/sample02/9.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/workshop/9.JPG"],
				["gallery/sample02/17.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/workshop/17.JPG"],
				["gallery/sample02/18.jpg","140.117.31.26/gallery/2010-04-09_workshop_Hualien/workshop/18.JPG"]
				);
				
	//要取幾張來播放
	var playImg = new Array(13);
	//目前播放到第幾張
	var nowIndex=0;
 
	//從allImg中取出N張放到myImg裡面
	for(var i=0;i<playImg.length;i++){
		playImg[i] = myImg[Math.ceil(Math.random()*myImg.length-1)];
		for(var j=0;j<i;j++){
			if(playImg[j]==playImg[i])	i--;
		}
	}
 
	function showImg(){
		document.getElementById("my_div").innerHTML = "<A HREF='http://"+playImg[nowIndex][1]+"'><img src="+playImg[nowIndex][0]+" border='0'></a>";
		//若nowIndex+1後>=playImg的長度，nowIndex重0開始；否則加1
		nowIndex = (nowIndex+1)>= playImg.length?0:nowIndex+1;
		
	}
	//設定每2秒執行一次showImg()
	setInterval("showImg()",2000);