https://slovobooks.ru/local/templates/slovo/components/bitrix/main.register/popup/script.js

1$(document).ready(function(){
2	
3	$(document).on('input', 'input[name="REGISTER[EMAIL]"]', function(){
4		$('#register-form').find('input[name="REGISTER[LOGIN]"]').val($(this).val());
5	});
6
7	if($('#modal-register-success').length){
8		util.addEvent('registrationsite');
9		$.fancybox.open({
10		  closeExisting: true,
11		  touch: false,
12		  src: "#modal-register-success",
13		  transitionEffect: "circular",
14		  clickSlide : 'false',
15		  clickOutside : 'false',
16		  smallBtn: false,
17		  toolbar: false,
18		  mobile : {
19			clickContent : "false",
20			clickSlide : "false"
21		  }
22		});
23	}
24	
25});