<?php function thb_button( $atts, $content = null ) {
  $atts = vc_map_get_attributes( 'thb_button', $atts );
  extract( $atts );

	$element_id = uniqid( 'thb-button-' );
	$full_width = $full_width === "true" ? 'full' : '';
  $link       = ( $link == '||' ) ? '' : $link;
	$link       = vc_build_link( $link  );
	$link_to    = $link['url'];
	$a_title    = $link['title'];
	$a_target   = $link['target'] ? $link['target'] : '_self';

	// Lightbox
	if ( 'true' === $lightbox ) {
  	if ( strpos($link_to, 'youtu.be') !== false || strpos($link_to, 'youtube.com') !== false || strpos($link_to, 'player.vimeo.com') !== false ){
  	  $class[] = 'mfp-video';
  	} else {
  	  $class[] = 'mfp-image';
  	}
	}
	// Classes
	$class[] = 'btn';
	$class[] = $style;
	$class[] = $size;
	$class[] = $full_width;
	$class[] = $color;
	$class[] = $border_radius;
	$class[] = $animation;
	$class[] = $extra_class;
	$class[] = $thb_shadow;
	$out = '';

	ob_start();
	?>
	<a id="<?php echo esc_attr( $element_id ); ?>" class="<?php echo esc_attr( implode( ' ', $class ) ); ?>" href="<?php echo esc_attr( $link_to ); ?>" target="<?php echo sanitize_text_field( $a_target ); ?>" role="button">
	  <span><?php echo esc_attr( $a_title ); ?></span></a>
  <?php
  $out = ob_get_clean();

  return $out;
}
thb_add_short( 'thb_button', 'thb_button' );