function NavOut()
{
document.getElementById("layer2").style.display="none";
document.getElementById("layer3").style.display="none";
document.getElementById("layer4").style.display="none";
document.getElementById("layer5").style.display="none";
document.getElementById("layer6").style.display="none";
document.getElementById("layer7").style.display="none";
document.getElementById("layer8").style.display="none";
}
function Nav2Over(){
document.getElementById("layer2").style.display="block";
document.getElementById("layer3").style.display="none";
document.getElementById("layer4").style.display="none";
document.getElementById("layer5").style.display="none";
document.getElementById("layer6").style.display="none";
document.getElementById("layer7").style.display="none";
document.getElementById("layer8").style.display="none";

}
function Nav3Over(){
document.getElementById("layer3").style.display="block";
document.getElementById("layer2").style.display="none";
document.getElementById("layer4").style.display="none";
document.getElementById("layer5").style.display="none";
document.getElementById("layer6").style.display="none";
document.getElementById("layer7").style.display="none";
document.getElementById("layer8").style.display="none";

}
function Nav4Over(){
document.getElementById("layer4").style.display="block";
document.getElementById("layer3").style.display="none";
document.getElementById("layer2").style.display="none";
document.getElementById("layer5").style.display="none";
document.getElementById("layer6").style.display="none";
document.getElementById("layer7").style.display="none";
document.getElementById("layer8").style.display="none";

}
function Nav5Over(){
document.getElementById("layer5").style.display="block";
document.getElementById("layer3").style.display="none";
document.getElementById("layer4").style.display="none";
document.getElementById("layer2").style.display="none";
document.getElementById("layer6").style.display="none";
document.getElementById("layer7").style.display="none";
document.getElementById("layer8").style.display="none";

}
function Nav6Over(){
document.getElementById("layer6").style.display="block";
document.getElementById("layer3").style.display="none";
document.getElementById("layer4").style.display="none";
document.getElementById("layer5").style.display="none";
document.getElementById("layer2").style.display="none";
document.getElementById("layer7").style.display="none";
document.getElementById("layer8").style.display="none";

}
function Nav7Over(){
document.getElementById("layer7").style.display="block";
document.getElementById("layer3").style.display="none";
document.getElementById("layer4").style.display="none";
document.getElementById("layer5").style.display="none";
document.getElementById("layer6").style.display="none";
document.getElementById("layer2").style.display="none";
document.getElementById("layer8").style.display="none";

}
function Nav8Over(){
document.getElementById("layer8").style.display="block";
document.getElementById("layer7").style.display="none";
document.getElementById("layer3").style.display="none";
document.getElementById("layer4").style.display="none";
document.getElementById("layer5").style.display="none";
document.getElementById("layer6").style.display="none";
document.getElementById("layer2").style.display="none";

}