function show_hide(id_element) {
    var elem = document.getElementById(id_element).style;
    if (elem.display == "block") {
        elem.display = "none";
    } else {
        elem.display = "block";
    }

    document.getElementById("footer_block").style.bottom = "1px";
    document.getElementById("footer_block").style.bottom = "0px";

    document.getElementById("contacts_block").style.bottom = "83px";
    document.getElementById("contacts_block").style.bottom = "82px";

    return false;
}



function show_hide_detail(href_id, id_element) {
    var elem = document.getElementById(id_element).style;
    var elHref = document.getElementById(href_id);
    if (elem.display == "block") {
        elem.display = "none";
        elHref.className = "to_open";
        elHref.innerHTML = detail;
    } else {
        elem.display = "block";
        elHref.className = "to_hide";
        elHref.innerHTML = hide;
    }

    document.getElementById("footer_block").style.bottom = "1px";
    document.getElementById("footer_block").style.bottom = "0px";

    document.getElementById("contacts_block").style.bottom = "83px";
    document.getElementById("contacts_block").style.bottom = "82px";

    return false;
}