var imagesupport = "false"

// If Netscape 3 or greater load Button Images
if (navigator.appName == "Netscape"){
        if (navigator.appVersion.substring(0,1) >= 3){
                imagesupport = "true";
               
        }
}

// If Explorer 4 or greater load Button Images
if (navigator.appName == "Microsoft Internet Explorer"){
        if (navigator.appVersion.substring(0,1) >= 4){
                imagesupport = "true";
               
        }
}

// This loads all the button images into two arrays

var n=0;
    addr="";
function loadButtons(n,addr,format){
        button = new Array(n);
        button_h = new Array(n);
        for (var i = 1; i < n+1; i++){
                button_h[i] = new Image();
                button_h[i].src = (addr + (i) + "h." + format);
                button[i] = new Image();
                button[i].src = (addr + (i) + "." + format);                
        }
}
// This handles the mouseover and mouseout events
function rollOver(oldbutton,newbutton){
        if (imagesupport == "true"){
                document.images[oldbutton].src=eval(newbutton + ".src");
        }       
}