//--- Layer sichtbar ---
function erscheine(strName)
	{
	//--- Netscape < 6 ---
	if((netscape()) && (browserversion() < 5))
		document.layers[strName].visibility = "show";

	//--- Netscape >= 6 ---
	else if((netscape()) && (browserversion() >= 5))
		document.getElementById(strName).style.visibility="visible";

	//--- Explorer ---
	else if(explorer()) 
		document.all[strName].style.visibility = "visible";
	}

//--- Layer unsichtbar ---	
function verschwindibus(strName)
	{
	//--- Netscape < 6 ---
	if((netscape()) && (browserversion() < 5))
		document.layers[strName].visibility = "hide";

	//--- Netscape >= 6 ---
	else if((netscape()) && (browserversion() >= 5))
		document.getElementById(strName).style.visibility="hidden";

	//--- Explorer ---
	else if(explorer()) 
		document.all[strName].style.visibility = "hidden";
	}