document.addEventListener('DOMContentLoaded', () => {
	        var checkElList = document.getElementsByClassName('check-el');
	        var linkHandler = document.getElementById('link-handler');
	        var checkValue = 3;

					var url = "https://google.com"

	        function handler(el) {
	          el.addEventListener("click", () => {
	            if (el.checked == true ) {
	              counter ++;
	            } else if (counter > 0) {
	              counter --;
	            }

	            if (counter >= checkValue) {
	              if (linkHandler && !linkHandler.classList.contains('link--active')) {
	                linkHandler.classList.add('link--active');

	                setTimeout(() => {
	                  window.location = url;
	                }, 5000);
	              }
	            } else if (linkHandler.classList.contains('link--active')) {
	              linkHandler.classList.remove('link--active')
	            }
	          });
	        }

	        if (checkElList && checkElList.length > 0) {
	          checkValue = checkElList.length;
	          var counter = 0;

	          for (const el of checkElList) {
	            el.addEventListener("click", handler(el));
	          }
	        };

	        if (linkHandler) {
	          linkHandler.addEventListener("click", (evt) => {
	            evt.preventDefault();
	            if (counter >= checkValue) {
	              window.location = url;
	              // do something
	            }
	          });
	        }
	      });