// JavaScript Document
function checklength(i){   
        if (i<10){   
         i="0"+i;}   
         return i;   
 }   
 function clock(){   
   var now = new Date();   
   var hours = checklength(now.getHours());   
   var minutes = checklength(now.getMinutes());   
   var seconds = checklength(now.getSeconds());   
   var format = 0;  //0=24 hour format, 1=12 hour format   
   var time;   
  
   if (format == 1){   
     if (hours >= 12){   
       if (hours ==12){   
         hours = 12;   
       }else {   
         hours = hours-12;   
       }   
      time=hours+':'+minutes+':'+seconds+' PM';   
     }else if(hours < 12){   
          if (hours ==0){   
            hours=12;   
          }   
      time=hours+':'+minutes+':'+seconds+' AM';   
     }   
   }   
  if (format == 0){   
     time= hours+':'+minutes+':'+seconds;   
  }   
  document.getElementById("clock").innerHTML=time;   
  setTimeout("clock();", 500);   
 }