WP_Cal_Demo #5

gistfile1.php

<?php

$calendar_output .= '<td>';
  	if ( in_array($day, $daywithpost) ) // any posts today?
				$calendar_output .= '<a href="' . get_day_link( $thisyear, $thismonth, $day ) . '" title="' . esc_attr( $ak_titles_for_day[ $day ] ) . "\">$day</a>";
		else
			$calendar_output .= $day;
	$calendar_output .= '</td>';