function changeImg(){
	  
	   var  tuPian=document.getElementById("tuPian");

	   var i="/pic/mingyan/"+parseInt(Math.random()*390)+".jpg";

       tuPian.src=i;
	   
	  //divObj.innerHTML ="<a href='http://www.alloong.com'><img src='"+i+"' width='495' height='63' border='0' align='middle'></a>"

	  //setTimeout("changeImg()",60*1000);//一分钟调用一次

	          }

changeImg();  

//document.write("<bgsound src='http://www.dragon-guide.net/css/crchbell.wav' autostart=true loop=1 /> ");
//document.write("<bgsound src='http://www.dragon-guide.net/css/crchbell.wav' autostart=false /> ");