bName = navigator.appName;
bVer = parseInt(navigator.appVersion);
    if ((bName == "Netscape" && bVer >= 3) || 
        (bName == "Microsoft Internet Explorer" && bVer >= 4)) br = "n3"; 
    else br = "n2";

    if (br== "n3") { 
    
   
    img91on = new Image();                    
    img91on.src = "images/0901on.gif";      
    img91off = new Image();              
    img91off.src = "images/0901.gif";
    
    img92on = new Image();                    
    img92on.src = "images/0902on.gif";      
    img92off = new Image();              
    img92off.src = "images/0902.gif";
        
    img93on = new Image();                    
    img93on.src = "images/0903on.gif";      
    img93off = new Image();              
    img93off.src = "images/0903.gif";
    
    img94on = new Image();                    
    img94on.src = "images/0904on.gif";      
    img94off = new Image();              
    img94off.src = "images/0904.gif";
    
    img95on = new Image();                    
    img95on.src = "images/0905on.gif";      
    img95off = new Image();              
    img95off.src = "images/0905.gif";
    
 
    
    }
// Function to "activate" images.
function imgAct(imgName) {
    if (br == "n3") {
    document[imgName].src = eval(imgName + "on.src");
    }
}
// Function to "deactivate" images.
function imgInact(imgName) {
    if (br == "n3") {
    document[imgName].src = eval(imgName + "off.src");
    }
}