a.menu_hearthstone {
    background: url("../images/bt-hearthstone.jpg") no-repeat top left;
    display: block;
    height: 300px;
    width: 188px;
}
a.menu_hearthstone span {
    display: none;
}
a.menu_hearthstone:hover {
    background-position: top right;
}

a.menu_history {
    background: url("../images/bt-history.jpg") no-repeat top left;
    display: block;
    height: 300px;
    width: 188px;
}
a.menu_history span {
    display: none;
}
a.menu_history:hover {
    background-position: top right;
}

a.menu_process {
    background: url("../images/bt-process.jpg") no-repeat top left;
    display: block;
    height: 300px;
    width: 188px;
}
a.menu_process span {
    display: none;
}
a.menu_process:hover {
    background-position: top right;
}

a.menu_advantages {
    background: url("../images/bt-advantages.jpg") no-repeat top left;
    display: block;
    height: 300px;
    width: 188px;
}
a.menu_advantages span {
    display: none;
}
a.menu_advantages:hover {
    background-position: top right;
}

a.menu_guarantee {
    background: url("../images/bt-guarantee.jpg") no-repeat top left;
    display: block;
    height: 300px;
    width: 188px;
}
a.menu_guarantee span {
    display: none;
}
a.menu_guarantee:hover {
    background-position: top right;
}

a.menu_projects {
    background: url("../images/bt-projects.jpg") no-repeat top left;
    display: block;
    height: 300px;
    width: 188px;
}
a.menu_projects span {
    display: none;
}
a.menu_projects:hover {
    background-position: top right;
}

a.menu_clients {
    background: url("../images/bt-clients.jpg") no-repeat top left;
    display: block;
    height: 300px;
    width: 188px;
}
a.menu_clients span {
    display: none;
}
a.menu_clients:hover {
    background-position: top right;
}

a.menu_archive {
    background: url("../images/bt-archive.jpg") no-repeat top left;
    display: block;
    height: 300px;
    width: 188px;
}
a.menu_archive span {
    display: none;
}
a.menu_archive:hover {
    background-position: top right;
}