function timeClock() { 
day = new Date( ) 
hru = day.getHours( ) 
miu = day.getMinutes( ) 
mi = miu/60 
hr = hru+mi 
if (( hr >= 0 ) && (hr < 1.5 ))tim="0" 
if (( hr >= 1.5 ) && (hr < 3 ))tim="-64" 
if (( hr >= 3 ) && (hr < 4.5 ))tim="-128" 
if (( hr >= 4.5 ) && (hr < 6 ))tim="-192" 
if (( hr >= 6 ) && (hr < 7.5 ))tim="-256" 
if (( hr >= 7.5 ) && (hr < 9 ))tim="-320" 
if (( hr >= 9 ) && (hr < 10.5 ))tim="-384" 
if (( hr >= 10.5 ) && (hr < 12 ))tim="-448" 
if (( hr >= 12 ) && (hr < 13.5 ))tim="-512" 
if (( hr >= 13.5 ) && (hr < 15 ))tim="-576" 
if (( hr >= 15 ) && (hr < 16.5 ))tim="-640" 
if (( hr >= 16.5 ) && (hr < 18 ))tim="-704" 
if (( hr >= 18 ) && (hr < 19.5 ))tim="-768" 
if (( hr >= 19.5 ) && (hr < 21 ))tim="-832" 
if (( hr >= 21 ) && (hr < 22.5 ))tim="-896" 
if (( hr >= 22.5 ) && (hr < 24 ))tim="-960" 
//document.clock.time.value = tim; 
document.getByElementId('clock').value=tim;
} 
setInterval("timeClock()", 1000); // 循环定时调用 

// JavaScript Document