var snum=1; //初始化显示的图片
var best_num=4; //图片的数量
var sec=2500; //切换图片的速度
var pic_id;
function FocusSlide(v){
	var i;
for(i=1;i<=4;i++){
	  eval("document.getElementById(\"focus_tit_"+i+"\").className=\"\"");
	  eval("document.getElementById(\"focus_img_"+i+"\").style.display=\"none\"");
	}
eval("document.getElementById(\"focus_tit_"+v+"\").className=\"acti\"");
eval("document.getElementById(\"focus_img_"+v+"\").style.display=\"\"");
SetNum(v+1);
clearTimeout(pic_id);
pic_id = setTimeout("FocusSlide(snum)",sec);
}
function SetNum(v){
snum=v;
if(snum>best_num) snum=1;
}
pic_id = setTimeout("FocusSlide(snum)",sec);

////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////
$(document).ready(function(){
 	$('.ad5_tl').each(function(){
 		e = $(this);
 		if(!e.find("dt").html()&&!e.find("dd").html()){
 			e.hide();
 		}
 	})
});