function change_navi1()
{
document.images.navi1.src = "images/kioski-nav-01-on.gif";
document.images.navitext.src = "images/kioski-nav-tervetuloa.gif";
}
function change_back1()
{
document.images.navi1.src = "images/kioski-nav-01-off.gif";
document.images.navitext.src = "images/kioski-nav-galleria.gif";
}

function change_navi2()
{
document.images.navi2.src = "images/kioski-nav-02-on.gif";
document.images.navitext.src = "images/kioski-nav-info.gif";
}
function change_back2()
{
document.images.navi2.src = "images/kioski-nav-02-off.gif";
document.images.navitext.src = "images/kioski-nav-galleria.gif";
}

function change_navi3()
{
document.images.navi3.src = "images/kioski-nav-03-on.gif";
document.images.navitext.src = "images/kioski-nav-artistit.gif";
}
function change_back3()
{
document.images.navi3.src = "images/kioski-nav-03-off.gif";
document.images.navitext.src = "images/kioski-nav-galleria.gif";
}

function change_navi4()
{
document.images.navi4.src = "images/kioski-nav-04-on.gif";
document.images.navitext.src = "images/kioski-nav-galleria.gif";
}
function change_back4()
{
document.images.navi4.src = "images/kioski-nav-04-off.gif";
document.images.navitext.src = "images/kioski-nav-galleria.gif";
}