browser = navigator.appName;
browserNum = parseInt(navigator.appVersion);

if ((browser == "Netscape") && (browserNum < 5)) {
    layerRef = "document.layers['";
    endLayerRef = "']";
    style = "";
}
else if ((browser == "Netscape") && (browserNum >= 5)) {
    layerRef = "document.getElementById('";
    styleRef = ".style";
    endLayerRef = "')";
}
else {
    layerRef = "document.all['";
    endLayerRef = "']";
    styleRef = ".style";
}

function showLayer(layerName) {
    if (eval(layerRef + layerName + endLayerRef + styleRef + ".display =='block'")) {
        hideLayer(layerName);
        return false;
    }
    eval(layerRef + layerName + endLayerRef + styleRef + ".display = 'block'");
    return false;
}

function hideLayer(layerName) {
    eval(layerRef + layerName + endLayerRef + styleRef + ".display = 'none'");
}

function closedivs(layername) {
    var divs = document.getElementsByTagName('div');
    var len = divs.length;
    for (var i = 0; i < len; i++) {
        d_id = divs[i].getAttribute('id');
        if (d_id != null) {
            if (d_id.substring(0, 10) == 'Servicediv') {
                hideLayer(d_id);
            }
        }
    }
}