function show_date_time(){ 
  window.setTimeout("show_date_time()", 1000); 
  today=new Date(); 
  timeold=(today.getTime() - DiscuzRunDay.getTime()); 
  sectimeold=timeold/1000 
  secondsold=Math.floor(sectimeold); 
  msPerDay=12*30*24*60*60*1000 
  e_yearsold=timeold/msPerDay 
  yearsold=Math.floor(e_yearsold);
  e_monthsold=(e_yearsold-yearsold)*12;
  monthsold=Math.floor(e_monthsold);
  e_daysold=(e_monthsold-monthsold)*30;
  daysold=Math.floor(e_daysold); 
  e_hrsold=(e_daysold-daysold)*24; 
  hrsold=Math.floor(e_hrsold); 
  e_minsold=(e_hrsold-hrsold)*60; 
  minsold=Math.floor((e_hrsold-hrsold)*60); 
  seconds=Math.floor((e_minsold-minsold)*60); 
 times.innerHTML="<span>"+yearsold+"年"+monthsold+"个月"+daysold+ "天" +hrsold+"小时"+minsold+"分钟"+seconds+"秒"+"</span>" ; 
 } 
 show_date_time();