function  show_time()
      {   
          var today,hour,second,minute,year,month,date,time;
          
          today=new Date();
      
        year = today.getYear();
        month = today.getMonth()+1;
        date = today.getDate();
        hour = today.getHours();
        minute =today.getMinutes();
        second = today.getSeconds();
        if(second < 10)
        {
            time =month + "-" + date +" " + hour + ":" + minute + ":0" + second;
        }
        else
        {
            time = month + "-" + date +" " + hour + ":" + minute + ":" + second;
        }
        document.getElementById('timer').innerHTML= time;
      } 
     setInterval(show_time,1000);