var img1 = new Image();
img1.src = "_images/page01_menu.png";
var img1hover = new Image();
img1hover.src = "_images/page01_menu_hover.png";

var img2 = new Image();
img2.src = "_images/page02_menu.png";
var img2hover = new Image();
img2hover.src = "_images/page02_menu_hover.png";

var img3 = new Image();
img3.src = "_images/page03_menu.png";
var img3hover = new Image();
img3hover.src = "_images/page03_menu_hover.png";

var img4 = new Image();
img4.src = "_images/page04_menu.png";
var img4hover = new Image();
img4hover.src = "_images/page04_menu_hover.png";

var img5 = new Image();
img5.src = "_images/page05_menu.png";
var img5hover = new Image();
img5hover.src = "_images/page05_menu_hover.png";

var imgImpressum = new Image();
imgImpressum.src = "_images/footer_impressum.gif";
var imgImpressumhover = new Image();
imgImpressumhover.src = "_images/footer_impressum_hover.gif";

function MenuClear(img)
{
 document.images[img].src = eval(img + ".src");
}
function MenuHover(img)
{
 document.images[img].src = eval(img + "hover.src");
}