function schrift_gr(){
with(document) {
  getElementById("idsubnavibottom").style.fontSize = "140%";
  getElementById("idsearchfield").style.fontSize = "140%";
  getElementById("idcontentmirror").style.fontSize = "140%";
  getElementById("idcontentbottom").style.fontSize = "140%";

}
}
function schrift_mi(){
with(document) {
  getElementById("idsubnavibottom").style.fontSize = "120%";
  getElementById("idsearchfield").style.fontSize = "120%";
  getElementById("idcontentmirror").style.fontSize = "120%";
  getElementById("idcontentbottom").style.fontSize = "120%";

}
}
function schrift_kl(){
with(document) {
  getElementById("idsubnavibottom").style.fontSize = "100%";
  getElementById("idsearchfield").style.fontSize = "100%";
  getElementById("idcontentmirror").style.fontSize = "100%";
  getElementById("idcontentbottom").style.fontSize = "100%";
}
}