[Sav2907]

Есть таблица, данные будут подтягиваться из базы в таком виде.
Задача: сделать обратный отсчет в классе "время"

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<style>
.table{
border-collapse: collapse;
}
.table td{
border: 1px solid #000;
padding: 10 10;
}
.check{
background: green;
}
.click{
cursor: pointer;
}
</style>
<table class="table">
	<tr>
		<td>#</td>
		<td colspan="4">Число</td>
		<td><span class="vremja">00:50:00</span></td>
	</tr>
    <tr>
        <td rowspan="3">1.</td>
        <td class="click">01</td>
        <td class="click">02</td>
        <td class="click">03</td>
        <td class="click">04</td>
        <td rowspan="3"><select class="num" disabled><option value=""></option><option value="10">10</option><option value="20">20</option><option value="30">30</option></select></td>
    </tr>
    <tr>
        <td class="click">05</td>
        <td class="click">06</td>
        <td class="click">07</td>
        <td class="click">08</td>      
    </tr>
    <tr>
        <td class="click">09</td>
        <td class="click">10</td>
        <td class="click">11</td>
        <td class="click">12</td>      
    </tr>
	<tr>
		<td>#</td>
		<td colspan="4">Число</td>
		<td><span class="vremja">00:30:00</span></td>
	</tr>
    <tr>
        <td rowspan="3">2.</td>
        <td class="click">13</td>
        <td class="click">14</td>
        <td class="click">15</td>
        <td class="click">16</td>
        <td rowspan="3"><select class="num" disabled><option value=""></option><option value="10">10</option><option value="20">20</option><option value="30">30</option></select></td>
    </tr>
    <tr>
        <td class="click">17</td>
        <td class="click">18</td>
        <td class="click">19</td>
        <td class="click">20</td>      
    </tr>
    <tr>
        <td class="click">21</td>
        <td class="click">22</td>
        <td class="click">23</td>
        <td class="click">24</td>      
    </tr>
</table>