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function trash_past_events() {
      $args = array(
			'post_type' => 'event',
			'posts_per_page' => -1,
			'meta_key' => '_date',
			'meta_value' => time(),
			'meta_compare' => '<'
		);
		$events = new WP_Query($args);
		if ($events->have_posts()) {
			while ($events->have_posts()) {
				$events->the_post();
				$details = get_post_meta(get_the_ID(),'_details',true);
				unset($details['date']);
				update_post_meta(get_the_ID(),'_details',$details);
				delete_post_meta(get_the_ID(),'_date');
				wp_trash_post(get_the_ID());
			}
		}
	}
 
function meta_boxes() {
  	$positions = array('normal','side','advanced');
		add_meta_box('detail','Details',array(&$this,'create_meta_box'),$this->type,$positions[1]);
		add_meta_box('repeat','Repeat',array(&$this,'create_repeat_events'),$this->type,$positions[1]);
	}
  
    function create_meta_box($post) {
			$details = get_post_meta($post->ID,'_details',true);
			$details = wp_parse_args($details,array('date' => ''));
			if (array_key_exists('date',$details) && !empty($details['date']))
				$details['date'] = date("Y-m-d",$details['date']);
 
			echo '<input type="hidden" name="' . $this->nonce . '_noncename" id="' . $this->nonce . '_noncename" value="' . wp_create_nonce( __FILE__ ) . '" />';
 
			echo '<p><strong>Date</strong><br />';
			echo '<input type="date" name="details[date]" value="' . $details['date'] . '" style="width: 246px;" /></p>';
		}
 
		function create_repeat_events() {
			global $post;
			$repeat = get_post_meta($post->ID,'_repeat',true);
			$repeatday = get_post_meta($post->ID,'_repeatday',true);
			echo '<input type="hidden" name="' . $this->nonce . '_noncename" id="' . $this->nonce . '_noncename" value="' . wp_create_nonce( __FILE__ ) . '" />';
			
			echo '<p><input type="checkbox" name="repeat" value="1" ' . checked($repeat,1,false) . ' class="code" style="width: 8%;" /><strong>Check this if Repeat Event</strong></p>';
 
			$days = array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday');
			echo '<p><select name="repeatday" class="code">';
				echo '<option value="">Please select a day</option>';
				foreach ($days as $i => $day)
					echo '<option value="' . $i . '"' . selected($i,$repeatday,false) . '>' . $day . '</option>';
			echo '</select></p>';
			//echo '<p><select name="repeatday" class="code" style=""><option value="0">Sunday</option><option value="1">Monday</option><option value="2">Tuesday</option><option value="3">Wednesday</option><option value="4">Thursday</option><option value="5">Friday</option><option value="6">Saturday</option></select></p>';
		}
 
	function save_post($post_id) {
		$post = get_post($post_id);
		if (!is_admin() || $post->post_type != $this->type)
			return;
		
		if ( !array_key_exists($this->nonce . '_noncename',$_POST) || !wp_verify_nonce( $_POST[$this->nonce . '_noncename'], __FILE__ ))
			return $post_id;
		
		if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
			return $post_id;
			
		if (!current_user_can('edit_post',$post_id))
			return $post_id;
 
		$details = $_POST['details'];
		$details['date'] = strtotime($details['date']);
 
		update_post_meta($post_id,'_event_date',$details['date']);
		update_post_meta($post_id,'_details',$details);
		update_post_meta($post_id,'_repeat',$_POST['repeat']);
		update_post_meta($post_id,'_repeatday',$_POST['repeatday']);
	}