function Validate(list, span) {
    var list = document.getElementById(list);
    var span = document.getElementById(span);
    
    if (list == null) {
        return false;
    }

    for (var i = 0; i < list.childNodes.length; i++) {
      
        if (list.childNodes[i].tagName.toLowerCase() == 'input') {
            if (list.childNodes[i].checked) {

                span.setAttribute("class", "title");
                return true;
            }
        }
    }
    span.setAttribute("class", "title_error");
    return false;
}