var layerOn;

function layeroff() {
		if (layerOn == null) return;
		if (navigator.appName=="Netscape" && navigator.appVersion.indexOf("5.") != 0) {
	       	 	document.layers[layerOn].visibility = "hide";
			}else{
				document.getElementById(layerOn).style.visibility="hidden";
			}
}
function layeron(whichlayer,element) {
		layerOn=whichlayer;
		if (navigator.appName=="Netscape" && navigator.appVersion.indexOf("5.") != 0) 
		{
			eval("document.layers['"+whichlayer+"'].visibility = 'show'");
		}else{
			document.getElementById(whichlayer).style.visibility="visible";
		}
}

function showDetail(element){
	//var name = element.value;
	var e = document.forms["overview"].elements[element];
	if (e != null){
		document.location=e.value;
	}

}

function disableNameList(){
	window.status="disable";
	if (navigator.appName=="Netscape" && navigator.appVersion.indexOf("5.") != 0) {
	 	document.layers['alleNamen'].visibility = 'hide';
	}else{
		document.getElementById("alleNamen").style.visibility="hidden";
	}
}

function enableNameList(){
	if (navigator.appName=="Netscape" && navigator.appVersion.indexOf("5.") != 0) {
	 	document.layers['alleNamen'].visibility = 'show';
	}else{
		document.getElementById("alleNamen").style.visibility="visible";
	}
}