This simple one has eluded me for a while.
I have a basic table with the date for one week in each row.
eg
<td>14 May<br>Tues</td>
<td>15 May<br>Wed</td>
<td>16 May<br>Thurs</td>
<td>17 May<br>Fri</td>
<td>18 May<br>Sat</td>
<td>19 May<br>Sun</td>
<td>20 May<br>Mon</td>
<td>21 May<br>Tues</td>
<td>22 May<br>Wed</td>

I want todays date to highlight with a different color background to the rest.
Page is built in php.