function anzeigen(txt, lnk1, lnk2)
{
	window.document.getElementById(txt).style.visibility = "visible";
	window.document.getElementById(txt).style.display = "block";
	window.document.getElementById(lnk1).style.visibility = "hidden"
	window.document.getElementById(lnk1).style.display = "none";
	window.document.getElementById(lnk2).style.visibility = "visible"
}
function ausblenden(txt, lnk1, lnk2)
{
	window.document.getElementById(txt).style.visibility = "hidden";
	window.document.getElementById(txt).style.display = "none";
	window.document.getElementById(lnk1).style.visibility = "visible"
	window.document.getElementById(lnk1).style.display = "";
	window.document.getElementById(lnk2).style.visibility = "hidden"
}