//Figure out how many rows we need.
$numrows = ceil (((date("t",mktime (0, 0, 0, $month + 1, 0, $year)) + $monthstart) / 7));
//Let's make an appropriate number of rows...
for ($k = 1; $k <= $numrows; $k++){
?><tr><?php
//Use 7 columns (for 7 days)...
for ($i = 0; $i < 7; $i++){
$startdate++;
if (($startdate <= 0) || ($startdate > $lastday)){
//If we have a blank day in the calendar.
?><td style="background: #FFFFFF;"> </td><?php
} else {