function btns_onclick(event) {
    pos_x = event.offsetX ? (event.offsetX) : event.pageX - document.getElementById("btns").offsetLeft;
    pos_y = event.offsetY ? (event.offsetY) : event.pageY - document.getElementById("btns").offsetTop;
    if (pos_x < 30) {
        window.location.assign("index.htm")
    } else if (pos_x < 64) {
        window.location.assign("/phpBB3/")
    } else {
        window.location.assign("sitemap.htm")
    }
}
function menu_onmouseover(ctl, i) 
{
    ctl.src = "md" + i + ".png";
}
function menu_onmouseout(ctl, i) {
    ctl.src = "m" + i + ".png";
}
function check_number(val) {
    if (licences_count.readOnly == true) {
        return;
    }
    if (val.value == 0 || val.value == "") {
        val.value = "";
    } else {
        val.value = val.value.replace(/\D/g, '');
    }

}
function licences_count_onchange(val) {
    q = val.value;
    price = 27;
    if (q <= 1)
        price = 27; else
    if (q <= 9)
        price = 23; else
    if (q <= 29)
        price = 20; else
    if (q <= 49)
        price = 18; else
        price = 14;
    total_price.value = q * price + ".00";
}
function doc_onload() {
    licences_count.value = "1";
    licences_count_onchange(licences_count);
}