(function() {

    'use strict';

    var stil = document.getElementById('stilizare');
    var input = document.getElementById('tag');
    var inputValue;
    var items;
    var radios = document.getElementsByTagName('input');
    var radioClass;

    stil.onclick = function() {
        inputValue = input.value;
        items = document.getElementsByTagName(inputValue);
        for(let i = 0; i < radios.length; i++) {
            if(radios[i].type === 'radio' && radios[i].checked === true) {
                radioClass = radios[i].id;
                break;
            }
        }
        for(let i = 0; i < items.length; i++) {
            setTimeout(function() {
                items[i].className = radioClass;
            }, i * 1000);
        }
    }
})();