function toggleImpressum() {
	if (document.getElementById("impressumtext").style.display == "none") {
		document.getElementById("text").style.display = "none";	
		document.getElementById("impressumtext").style.display = "";	
	}	else {
		document.getElementById("text").style.display = "";
		document.getElementById("impressumtext").style.display = "none";		
	}
}