tausch1 = new Image();
tausch1.src = "grafic/n_but1b.gif";
normal1 = new Image();
normal1.src = "grafic/n_but1a.gif";
tausch2 = new Image();
tausch2.src = "grafic/n_but2b.gif";
normal2 = new Image();
normal2.src = "grafic/n_but2a.gif";

function mover(a, buta){window.document.images['b'+a].src = buta.src;}
function mout(a, butb){window.document.images['b'+a].src = butb.src;}

function impressum()
{
window.open('http://www.memberbereiche.de/impressum.php','Info','width=300,height=300,left=0,top=0,screenX=0,screenY=0');
}
function bild(url)
{
var win2 = window.open(url,'Vorschau','width=400,height=480,left=0,top=0,screenX=0,screenY=0');
win2.focus();
}