#Ebene1 { position: absolute; z-index: 1; top: 0px; left: 0px; width: 747px; visibility: visible; display: block }
#links   { position: absolute; z-index: 2; top: 330px; left: 174px; width: 97px; height: 300px; visibility: visible; display: block }
#links2 { position: absolute; z-index: 3; top: 330px; left: 271px; width: 111px; height: 300px; visibility: visible; display: block }
#mail  { position: absolute; z-index: 3; top: 295px; left: 600px; width: 200px; height: 100px; visibility: visible; display: block }