function $(id){
	return document.getElementById(id);
}
var pic_data="";
var pic_this = 1;
var pic_get_xunhuan;
function get_pic(){

		pic_data+= "~http://img.school51.com/2008-12-23/2008122341086329.jpg|/Pic_New/2008-12/36/|[石家庄] 燃情圣诞之幸福恋人大搜罗";
	
		pic_data+= "~http://img.school51.com/2008-12-23/2008122338615485.jpg|/Pic_New/2008-12/35/|[石家庄] 天黑请闭眼";
	
		pic_data+= "~http://img.school51.com/2008-12-16/2008121638973049.jpg|/Pic_New/2008-12/31/|[石家庄] 点燃激情·成就梦想";
	
		pic_data+= "~http://img.school51.com/2008-12-2/2008120253252229.jpg|/Pic_New/2008-12/10/|[石家庄] 活力瑜伽7日计划";
	
		pic_data+= "~http://img.school51.com/2008-12-2/2008120250786977.jpg|/Pic_New/2008-12/9/|[石家庄] 我们去爬山";
	
		pic_data+= "~http://img.school51.com/2008-12-1/2008120149637573.jpg|/Pic_New/2008-12/6/|[石家庄] 放声歌唱";
	
		pic_data+= "~http://img.school51.com/2008-12-1/2008120147525337.jpg|/Pic_New/2008-12/5/|[石家庄] 体验瑜伽";
	
		pic_data+= "~http://img.school51.com/2008-11-28/2008112852753257.jpg|/Pic_New/2008-11/85/|[石家庄] 激情游戏大比拼";
		
	pic_data = pic_data.split("~");
	for(var i=1;i<pic_data.length;i++){
		pic_data[i] = pic_data[i].split("|");
		$("small_img").innerHTML += "<li><a href=\"Javascript:void(0)\" onclick=\"pic_get("+ i +")\"><img src=\"" + pic_data[i][0] + "\" width=\"75\" height=\"33\" border=\"0\" align=\"absmiddle\" /></a></li>";
	}
	pic_get(1);
}

//最新活动图片点击小图片更换大图片地址
function pic_get(n){
	clearInterval(pic_get_xunhuan);
	if(n >= pic_data.length){
		n=1;
	}else if(n<1){
		n=pic_data.length-1;
	}
	$("small_img").getElementsByTagName("li")[n-1].getElementsByTagName("a")[0].className = "this_small_img";
	if(n!=pic_this){
		$("small_img").getElementsByTagName("li")[pic_this-1].getElementsByTagName("a")[0].className = undefined;
	}
	//if(IsIE()){
	//	$("Activity_img_big_img").filters[0].Apply();
	//	$("Activity_img_big_img").style.backgroundImage = "url(" + pic_data[n][0] + ")";
	//	$("Activity_img_big_img").filters[0].Play(duration=2);
	//}else{
		$("Activity_img_big_img").style.backgroundImage = "url(" + pic_data[n][0] + ")";
	//}
	
	$("Activity_img_big_img").href = pic_data[n][1];
	$("Activity_img_title").innerHTML = pic_data[n][2];
	$("Activity_img_title").href = pic_data[n][1];
	
	pic_this = n ;
	var n1=Math.ceil(n/4) - 1;
	$("small_img").scrollTop = 40*n1;
	pic_get_xunhuan=setInterval("pic_get(" + (n+1) + ")",5000);
}