browser_name = navigator.appName; 
browser_version = parseFloat(navigator.appVersion); 

if (browser_name == "Netscape" && browser_version >= 3.0) { roll = 'true'; } 
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 3.0) { roll = 'true'; } 
else if (browser_name == "Opera" && browser_version >= 3.0) { roll = 'true'; }
else { roll = 'false'; } 


function load(location){ 
return image; 
} 

function show(where){ 
if (roll == 'true'){ 
stored=where; 
storedLocation=document.images[where].src; 
document.images[where].src="i/mv2.gif"; 
} 

} 
function hide(){ 
if (roll == 'true') document.images[stored].src=storedLocation; 
} 
function change(img, ref) {
       document.images[img].src = ref;
   }
{
a1=new Image; a1.src="i/mv2.gif";
}