// Pre-loading images

var homeOn = new Image()             
homeOn.src = "images/nav/rolled/home.gif"; 

var processOn = new Image()             
processOn.src = "images/nav/rolled/ourProcess.gif"; 

var servicesOn = new Image()             
servicesOn.src = "images/nav/rolled/services.gif"; 

var portfolioOn = new Image()             
portfolioOn.src = "images/nav/rolled/portfolio.gif"; 

var contactOn = new Image()             
contactOn.src = "images/nav/rolled/contact.gif"; 

var logInOn = new Image()             
logInOn.src = "images/nav/rolled/logIn.gif"; 

var homeOff = new Image()             
homeOff.src = "images/nav/norm/home.gif"; 

var processOff = new Image()             
processOff.src = "images/nav/norm/ourProcess.gif"; 

var servicesOff = new Image()             
servicesOff.src = "images/nav/norm/services.gif"; 

var portfolioOff = new Image()             
portfolioOff.src = "images/nav/norm/portfolio.gif"; 

var contactOff = new Image()             
contactOff.src = "images/nav/norm/contact.gif"; 

var logInOff = new Image()             
logInOff.src = "images/nav/norm/logIn.gif"; 



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

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