function grow(){
self.moveTo(0,0);
self.resizeTo(screen.availWidth,screen.availHeight);
}

// Ein-/ausblenden von Ebenen

var ja = function ja(id) {
if (document.getElementById) {
document.getElementById(id).style.visibility="visible";
}
} 

var nein = function nein(id) {
if (document.getElementById) {
document.getElementById(id).style.visibility="hidden";
}
}