if (document.images)
{
var off1 = new Image();
off1.src = "images/menu-aboutus.jpg";
var on1 = new Image();
on1.src = "images/menu-aboutus-on.jpg";

var off2 = new Image();
off2.src = "images/menu-services.jpg";
var on2 = new Image();
on2.src = "images/menu-services-on.jpg";

var off3 = new Image();
off3.src = "images/menu-projects.jpg";
var on3 = new Image();
on3.src = "images/menu-projects-on.jpg";

var off4 = new Image();
off4.src = "images/menu-contact.jpg";
var on4 = new Image();
on4.src = "images/menu-contact-on.jpg";

var off5 = new Image();
off5.src = "images/menu-home.jpg";
var on5 = new Image();
on5.src = "images/menu-home-on.jpg";
}

function function1()
{
if (document.images)
document.images.button1.src = on1.src;
window.status = '' ;
}

function function2()
{
if (document.images)
document.images.button1.src = off1.src;
window.status = '' ;
}


function function3()
{
if (document.images)
document.images.button2.src = on2.src;
window.status = '' ;
}

function function4()
{
if (document.images)
document.images.button2.src = off2.src;
window.status = '' ;
}

function function5()
{
if (document.images)
document.images.button3.src = on3.src;
window.status = '' ;
}

function function6()
{
if (document.images)
document.images.button3.src = off3.src;
window.status = '' ;
}

function function7()
{
if (document.images)
document.images.button4.src = on4.src;
window.status = '' ;
}

function function8()
{
if (document.images)
document.images.button4.src = off4.src;
window.status = '' ;
}

function function9()
{
if (document.images)
document.images.button5.src = on5.src;
window.status = '' ;
}

function function10()
{
if (document.images)
document.images.button5.src = off5.src;
window.status = '' ;
}