em custom shortcode

function em_my_group_shortcode( $args = array(), $format='' ){

	$args['limit'] = (!empty($args['limit']) && is_numeric($args['limit']) )? $args['limit'] : false;
	$args['page'] = (!empty($args['page']) && is_numeric($args['page']) )? $args['page'] : 1;
	$args['page'] = (!empty($_REQUEST['page']) && is_numeric($_REQUEST['page']) )? $_REQUEST['page'] : $args['page'];
	$args['offset'] = ($args['page']-1) * $args['limit'];
	$args['orderby'] = 'event_start_date,event_start_time,event_name'; // must override this to display events in right cronology.
	if( !empty($format) ){ $args['format'] = html_entity_decode($format); } //accept formats
	//Reset some vars for counting events and displaying set arrays of events
	$atts = (array) $args;
	$atts['pagination'] = false;
	$atts['limit'] = false;
	$atts['page'] = false;
	$atts['offset'] = false;
	//decide what form of dates to show
	$EM_Events = EM_Events::get($args);
	$events_count = EM_Events::count($atts);
	ob_start();
	switch ( $args['mode'] ){

		case 'daily':
			$format = (!empty($args['date_format'])) ? $args['date_format']:get_option('date_format');
			$events_dates = array();
			foreach($EM_Events as $EM_Event){
				$events_dates[strtotime($EM_Event->start_date)][] = $EM_Event;
			}
			foreach ($events_dates as $event_day_ts => $events){
				echo '<h2>'.date_i18n($format,$event_day_ts).'</h2>';
				echo EM_Events::output($events, $atts);
			}
			break;

	}

	if( !empty($args['limit']) && $events_count > $args['limit'] && (!empty($args['pagination']) || !isset($args['pagination'])) ){
		//Show the pagination links (unless there's less than $limit events)
		$page_link_template = add_query_arg(array('page'=>'%PAGE%'));
		echo em_paginate( $page_link_template, $events_count, $args['limit'], $args['page']);
	}

	return ob_get_clean();

}
add_shortcode ( 'group_events', 'em_my_group_shortcode');