//var sel_remove_cnt = 0;
var imageUrl = iUrl+ 'goroskop/img/';
function clearSelectFirstItem(select) {
    neighbour_id = select.id == 'man' ? 'woman' : 'man';
    if ($(neighbour_id).value != 0) $('button_learn').disabled = false;
    if (select.length == 12) return;
    select.remove(0);
}

function change_img(obj) {
    var img = $('img-'+obj.id)
    img.src = imageUrl+'y_'+obj.value+'.jpg';
    img.style.display = '';
    img.alt = obj.options[obj.selectedIndex].text;
}

function recalcDays() {
    sel_day = $('about_d');
    month = $('about_m').value;
    year = $('about_y').value;
    day_count = new Date(year, month, 0).getDate();
    
    diff = sel_day.length - day_count;
    
    if (diff > 0) { // удаляем
        sel_day.options.length = day_count; 
    } else if(diff < 0) {
        for(i = sel_day.length; i < day_count; i++) {
            sel_day.options[i] = new Option(i+1, i+1);
        }
    }
}