// Pre-loading images
var search_buttonOn = new Image()
search_buttonOn.src = "/theme/images/search_button_on.gif";

var search_buttonOff = new Image()
search_buttonOff.src = "/theme/images/search_button_off.gif";
        
var homeOn = new Image()             
homeOn.src = "/theme/images/vmo_nav_home_on.gif"; 
        
var homeOff = new Image()
homeOff.src = "/theme/images/vmo_nav_home_off.gif";
        
var helpOn = new Image()             
helpOn.src = "/theme/images/vmo_nav_help_on.gif"; 
        
var helpOff = new Image()
helpOff.src = "/theme/images/vmo_nav_help_off.gif";

var contactOn = new Image()             
contactOn.src = "/theme/images/vmo_nav_contact_on.gif"; 
        
var contactOff = new Image()
contactOff.src = "/theme/images/vmo_nav_contact_off.gif";

var dataOn = new Image()             
dataOn.src = "/theme/images/vmo_nav_data_on.gif"; 
        
var dataOff = new Image()
dataOff.src = "/theme/images/vmo_nav_data_off.gif";

var servicesOn = new Image()             
servicesOn.src = "/theme/images/vmo_nav_services_on.gif"; 
        
var servicesOff = new Image()
servicesOff.src = "/theme/images/vmo_nav_services_off.gif";

var docsOn = new Image()             
docsOn.src = "/theme/images/vmo_nav_docs_on.gif"; 
        
var docsOff = new Image()
docsOff.src = "/theme/images/vmo_nav_docs_off.gif";

var toolsOn = new Image()             
toolsOn.src = "/theme/images/vmo_nav_tools_on.gif"; 
        
var toolsOff = new Image()
toolsOff.src = "/theme/images/vmo_nav_tools_off.gif";

var newsOn = new Image()             
newsOn.src = "/theme/images/vmo_nav_news_on.gif"; 
        
var newsOff = new Image()
newsOff.src = "/theme/images/vmo_nav_news_off.gif";


var linksOn = new Image()             
linksOn.src = "/theme/images/vmo_nav_links_on.gif"; 
        
var linksOff = new Image()
linksOff.src = "/theme/images/vmo_nav_links_off.gif";

var morenewsOn = new Image()             
morenewsOn.src = "/theme/images/vmo_morenews_on.jpg"; 
        
var morenewsOff = new Image()
morenewsOff.src = "/theme/images/vmo_morenews_off.jpg";

function showOn(imgName) { 
document.images[imgName].src = eval(imgName + "On.src")
}

function showOff(imgName) {
document.images[imgName].src = eval(imgName + "Off.src");
}