<?php

$results = Array("2012-05-28","2012-05-29","2012-05-30");

?>

<script type="text/javascript">
    var $badDates = <?php echo json_encode($results); ?>;
</script>

<script type="text/javascript">
    var $badDates = ["2012-05-28","2012-05-29","2012-05-30"];
</script>