/* mouseover ohne layer magic ------------------------------------------------------------------ */
function bildOn( pfad , Id ){
	if (document.images) {
		document.images[Id].src = pfad +"nav_" +Id+ "_a.gif";
	}
}
function bildOff( pfad , Id ){
	if (document.images) {
		document.images[Id].src = pfad +"nav_" +Id+ ".gif";
	}
}

ie = ((document.all) && (!document.layers)) ? true : false;
ns = ((document.layers) && (!document.getElementById)) ? true : false;
moz = ((document.getElementById) && (!document.all)) ? true : false;

function hide(nr){
	if(ie)		document.all['sitemap'+nr].style.visibility="hidden";
	if(ns)		document.layers['sitemap'+nr].visibility="hidden";
	if(moz)		document.getElementById('sitemap'+nr).style.visibility="hidden";
}

function show(nr){
	if(ie)      document.all['sitemap'+nr].style.visibility="visible";
	if(ns)      document.layers['sitemap'+nr].visibility="visible";
	if(moz)		document.getElementById('sitemap'+nr).style.visibility="visible";
}