怎样才能限定每天工作日志的添加?
<form action="operation1201.asp" method="post" onSubmit="return checkform();" name="form1" id="form1">
......
<tr>
<td align="right" class="register">所需时间:</td>
<td class="register"><select name="texttime">
<option value="0.5">0.5</option>
<option value="1.0">1.0</option>
<option value="1.5">1.5</option>
<option value="2.0">2.0</option>
<option value="2.5">2.5</option>
<option value="3.0">3.0</option>
<option value="3.5">3.5</option>
<option value="4.0">4.0</option>
<option value="4.5">4.5</option>
<option value="5.0">5.0</option>
<option value="5.5">5.5</option>
<option value="6.0">6.0</option>
<option value="6.5">6.5</option>
<option value="7.0">7.0</option>
<option value="7.5">7.5</option>
<option value="8.0">8.0</option>
</select>
小时</td>
</tr>