// JavaScript Document
liste = ["trio_links", "repertoire_links", "presse_links", "aktuelles_links", "freunde_links", "impressum_links"];
function div_ref(id) {             
	if (document.getElementById) return document.getElementById(id);      
}
function move(){
	if(event.clientY < 180){
		for (var i = 0; i < liste.length; i++){
			if(i != which){
				document.getElementById(liste[i]).style.visibility = "visible";
			}
		}
	} else{
		for (var i = 0; i < liste.length; i++){
			if(i != which){
				document.getElementById(liste[i]).style.visibility = "hidden";
			}
		}
	}
}
function init(){
	var ua = navigator.userAgent.toLowerCase();
	if(ua.indexOf("msie") > -1 && ua.indexOf("mac") > -1){
		alert("Diese Webseite ist nicht mit dem Internet Explorer for Mac kompatibel. Bitte benutzen sie einen anderen Browser. Danke! This website is not compatible with Internet Explorer for Mac. Please use another browser. Thanks!");
	}
	if(ua.indexOf("msie") > -1 && ua.indexOf("opera") <= -1) {
		document.onmousemove = move;
		if(which > -1){
			document.getElementById(liste[which]).style.visibility = "visible";
		}
	}		
}