jQuery(document).ready(function($){
  
  window.onload = function (){
    $(".bts-popup").delay(1000).addClass('is-visible');
	}
  
	//open popup
	$('.bts-popup-trigger').on('click', function(event){
		event.preventDefault();
		$('.bts-popup').addClass('is-visible');
	});
	
	//close popup
	$('.bts-popup').on('click', function(event){
		if( $(event.target).is('.bts-popup-close') || $(event.target).is('.bts-popup') ) {
			event.preventDefault();
			$(this).removeClass('is-visible');
		}
	});
	//close popup when clicking the esc keyboard button
	$(document).keyup(function(event){
    	if(event.which=='27'){
    		$('.bts-popup').removeClass('is-visible');
	    }
    });
});