var uww_template = "    <div class="weather"><img class="weather__image" src="http://pogoda.unian.net/images/icons_with_bg/d000.svg" alt="Ясно і безхмарно" /><div class="weather__deg"><small>+</small><span>18</span><small>°</small></div><div class="weather__city">Аппер-Арлінгтон</div></div>";
var uww_container = document.getElementById('header__widget');

if (uww_container) {
uww_container.innerHTML = htmlDecode(uww_template);
}

function htmlDecode(input){
var e = document.createElement('div');
e.innerHTML = input;
return e.childNodes.length === 0 ? "" : e.childNodes[0].nodeValue;
}