button1=new Image ();
button1.src="navko.jpg";
button2=new Image ();
button2.src="navko1.jpg";
button3=new Image ();
button3.src="navim.jpg";
button4=new Image ();
button4.src="navim1.jpg";
button5=new Image ();
button5.src="navdo.jpg";
button6=new Image ();
button6.src="navdo1.jpg";
button7=new Image ();
button7.src="navmai.jpg";
button8=new Image ();
button8.src="navmai1.jpg";
button9=new Image ();
button9.src="navanf.jpg";
button10=new Image ();
button10.src="navanf1.jpg";


function wechsel1 ()
{
window.document.images [0].src=button2.src;
}

function wechsel2 ()
{
window.document.images[0].src=button1.src;}

function wechsel3 ()
{
window.document.images [1].src=button4.src;
}

function wechsel4 ()
{
window.document.images[1].src=button3.src;}

function wechsel5 ()
{
window.document.images [2].src=button6.src;
}

function wechsel6 ()
{
window.document.images[2].src=button5.src;}

function wechsel7 ()
{
window.document.images [3].src=button8.src;
}

function wechsel8 ()
{
window.document.images[3].src=button7.src;}

function wechsel9 ()
{
window.document.images [4].src=button10.src;
}

function wechsel10 ()
{
window.document.images[4].src=button9.src;}