function divweg_showHideLayers() { 
	var visStr, args, theObj;
	args 		= divweg_showHideLayers.arguments; //with args (layerName,visStr)
	layerName 	= args[0];
	visStr		= args[1];
	// NS4
    if (navigator.appName == 'Netscape' && document.layers != null) {		
		theObj = eval(document.layers[layerName]);
		if (theObj) {
			theObj.visibility = visStr;
		}
		//alert("divweg_showHideLayers() bei NS 4");
    }
	// NS6
    else if (navigator.appName == 'Netscape' && document.getElementById != null) {		
		if (visStr == 'show') visStr = 'visible'; //convert vals
		if (visStr == 'hide') visStr = 'hidden';
		theObj = eval(document.getElementById(layerName));
		if (theObj) {
			theObj.style.visibility = visStr;
		}
		//alert("divweg_showHideLayers() bei NS 6");
    }
	// IE4/5
	else if (document.all != null) { 
		if (visStr == 'show') visStr = 'visible'; //convert vals
		if (visStr == 'hide') visStr = 'hidden';
		theObj = eval(document.all[layerName]);
		if (theObj) {
			theObj.style.visibility = visStr;
		}
		//alert("divweg_showHideLayers() bei IE 4/5/5.5");
	}
}