function wech () {
	document.getElementById("wetter").style.visibility = "hidden";
	document.getElementById("wetter").style.zIndex = 1;
	document.getElementById("avard").style.visibility = "hidden";
	document.getElementById("avard").style.zIndex = 1;
	}
function da () {
	document.getElementById("wetter").style.zIndex = 999;
	document.getElementById("wetter").style.visibility = "visible";
	document.getElementById("avard").style.zIndex = 999;
	document.getElementById("avard").style.visibility = "visible";
}