// JavaScript Document 
var limit="0:15" 
if (document.images){ 
var parselimit=limit.split(":") 
parselimit=parselimit[0]*60+parselimit[1]*1 
} 
function beginrefresh(){ 
if (!document.images) 
return 
if (parselimit==1) 
window.location.reload() 
else{  
parselimit-=1 
curmin=Math.floor(parselimit/60) 
cursec=parselimit%60 
if (curmin!=0) 
curtime=curmin+"分"+cursec+"秒后重刷本页！" 
else 
curtime=cursec+"秒后重刷本页！" 
window.status=curtime 
setTimeout("beginrefresh()",4000)  //定时刷新，初始值为1分钟
} 
} 
window.onload=beginrefresh