시간 차이를 실시간으로 표여 주고 싶습니다. 채택완료

</p>

<p><script>

function now_time() {

    var time_t = new Date();

    var s =

    set_standard(time_t .getHours(), 2)+':'+

    set_standard(time_t .getMinutes(), 2);

    document.getElementById("output1").value = s;

}</p>

<p>function now_time2() {

    var time_t = new Date();

    var s =

    set_standard(time_t .getHours(), 2)+':'+

    set_standard(time_t .getMinutes(), 2);

    document.getElementById("output2").value = s;

}</p>

<p>function set_standard(time, digits) {

    var zero = '';

    time = time.toString();

    if (time.length < digits) {

        for (i = 0; i < digits - time.length; i++)

        zero += '0';

    }

    return zero + time;

}

</script>        </p>

<p>            

<td>

<input type="text" name="output1" id="output1" value="<?php echo $write['output1']; ?>">

<input type="button" onclick="now_time(this);"value="시작 시간">

</td>

<td>

<input type="text" name="output2" id="output2" value="<?php echo $write['output2']; ?>">

<input type="button" onclick="now_time2(this);" value="종료 시간">

</td>

<td>

<input type="text" name="output3" id="output3" value="<?php echo $write['output3']; ?>">

</td></p>

<p>