function showphoto1()
{
document.getElementById("photo1").style.visibility = "visible";
document.getElementById("photostart").style.visibility = "hidden";
document.getElementById("photo2").style.visibility = "hidden";
document.getElementById("photo3").style.visibility = "hidden";
document.getElementById("photo4").style.visibility = "hidden";
document.getElementById("photo5").style.visibility = "hidden";
document.getElementById("legende2").style.visibility = "visible";
document.getElementById("legende1").style.visibility = "hidden";
document.getElementById("legende3").style.visibility = "hidden";
document.getElementById("legende4").style.visibility = "hidden";
document.getElementById("legende5").style.visibility = "hidden";
document.getElementById("legende6").style.visibility = "hidden";
}

function showphoto2()
{
document.getElementById("photo2").style.visibility = "visible";
document.getElementById("photostart").style.visibility = "hidden";
document.getElementById("photo1").style.visibility = "hidden";
document.getElementById("photo3").style.visibility = "hidden";
document.getElementById("photo4").style.visibility = "hidden";
document.getElementById("photo5").style.visibility = "hidden";
document.getElementById("legende3").style.visibility = "visible";
document.getElementById("legende1").style.visibility = "hidden";
document.getElementById("legende2").style.visibility = "hidden";
document.getElementById("legende4").style.visibility = "hidden";
document.getElementById("legende5").style.visibility = "hidden";
document.getElementById("legende6").style.visibility = "hidden";
}

function showphoto3()
{
document.getElementById("photo3").style.visibility = "visible";
document.getElementById("photostart").style.visibility = "hidden";
document.getElementById("photo1").style.visibility = "hidden";
document.getElementById("photo2").style.visibility = "hidden";
document.getElementById("photo4").style.visibility = "hidden";
document.getElementById("photo5").style.visibility = "hidden";
document.getElementById("legende4").style.visibility = "visible";
document.getElementById("legende1").style.visibility = "hidden";
document.getElementById("legende3").style.visibility = "hidden";
document.getElementById("legende2").style.visibility = "hidden";
document.getElementById("legende5").style.visibility = "hidden";
document.getElementById("legende6").style.visibility = "hidden";
}

function showphoto4()
{
document.getElementById("photo4").style.visibility = "visible";
document.getElementById("photostart").style.visibility = "hidden";
document.getElementById("photo1").style.visibility = "hidden";
document.getElementById("photo2").style.visibility = "hidden";
document.getElementById("photo3").style.visibility = "hidden";
document.getElementById("photo5").style.visibility = "hidden";
document.getElementById("legende5").style.visibility = "visible";
document.getElementById("legende1").style.visibility = "hidden";
document.getElementById("legende3").style.visibility = "hidden";
document.getElementById("legende4").style.visibility = "hidden";
document.getElementById("legende2").style.visibility = "hidden";
document.getElementById("legende6").style.visibility = "hidden";
}

function showphoto5()
{
document.getElementById("photo5").style.visibility = "visible";
document.getElementById("photostart").style.visibility = "hidden";
document.getElementById("photo1").style.visibility = "hidden";
document.getElementById("photo2").style.visibility = "hidden";
document.getElementById("photo3").style.visibility = "hidden";
document.getElementById("photo4").style.visibility = "hidden";
document.getElementById("legende6").style.visibility = "visible";
document.getElementById("legende1").style.visibility = "hidden";
document.getElementById("legende3").style.visibility = "hidden";
document.getElementById("legende4").style.visibility = "hidden";
document.getElementById("legende5").style.visibility = "hidden";
document.getElementById("legende2").style.visibility = "hidden";
}