function radiogroup__get_selected(element){
        if(!element) return false;
        for(i = 0; i <= element.length - 1; i++){
            if (element[i].checked){
                return element[i].value;
            }
        }
        return false;
    }
    
    function radiogroup__set_selected(element, value){
        if(!element) return false;
        for(i = 0; i <= element.length - 1; i++){
            if (element[i].value == value){
                element[i].checked = true;
                return true;
            }
        }
        return false;
    }
    
    function radiogroup__enable(element, enabled){
        if(!element) return false;
        for(i = 0; i <= element.length - 1; i++){
            element[i].disabled = !enabled;
        }    
    }