function showServiceDescription(i) {
    for (var j=1; j<7; j++) {
        if (j==i){
            document.getElementById("service_description_1_"+j).style.display = 'block';
        } else {
            document.getElementById("service_description_1_"+j).style.display = 'none';
        }
    }
}

function showService(selected) {
    /*
    var selected_element = document.getElementById('addContent').elements["service"];
    var index = selected_element.selectedIndex;
    var selected = selected_element.options[index].value;
    */

    if (selected == 1) {
        document.getElementById('service_1').style.display = 'block';
        document.getElementById('service').options[0].selected = true;

        document.getElementById('service_2').style.display = 'none';
    } else {
        document.getElementById('service_2').style.display = 'block';
        document.getElementById('service').options[1].selected = true;

        document.getElementById('service_1').style.display = 'none';
    }
}