browser = (((navigator.appName == 'Netscape') && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == 'Microsoft Internet Explorer') && (parseInt(navigator.appVersion) >= 4 )))
ie4 = ((navigator.appName == 'Microsoft Internet Explorer') && (parseInt(navigator.appVersion) >= 4 ))
ns4 = ((navigator.appName == 'Netscape') && (parseInt(navigator.appVersion) >= 4 ))
mac = (navigator.appVersion.indexOf('Macintosh') != -1)

if (browser){
        markeron = new Image();
        markeron.src = '../../images/redbox.gif';
        markeroff = new Image();
        markeroff.src = '../../images/blackbox.gif';
}

if (ns4) {
layerRef='document.layers';
    styleRef='';
    imageRef='document.images';
} else {
    layerRef='document.all';
    styleRef='.style';
    imageRef='document.images';
}

function msover(which) {
        if (browser) {
                eval(imageRef + '["' + which + '"].src = markeron.src');
        }
    if (ie4){
        event.srcElement.style.color='red';
        event.srcElement.style.cursor = 'hand';
    }
}

function msout(which) {
        if (browser) {
                eval(imageRef + '["' + which + '"].src = markeroff.src');
        }
    if (ie4){
        event.srcElement.style.color='white';
        event.srcElement.style.cursor = 'auto';
    }
}
function toggle( targetId ){
  if (ie4){
        target = document.all( targetId );
            if (target.style.display == "none"){
                target.style.display = "";
            } else {
                target.style.display = "none";
            }
    }
}