// JavaScript Document
var timer_ctrl;

NS4 = (document.layers) ? 1 : 0;
IE4 = (document.all) ? 1 : 0;
DOM = (document.getElementById) ? 1 : 0;

function showmenu(elem) {
	hidemenu('projekte');
	hidemenu('studium');
	hidemenu('links');
	hidemenu('privat');
	hidemenu('judo');
	if (NS4) {
		document.layers[elem].visibility = "show";
	}else if (IE4){
		document.all[elem].style.visibility="visible";
	}else if (DOM){
		document.getElementById(elem).style.visibility = "visible";
	}
	window.clearTimeout(timer_ctrl);
}

function hidemenu(elem) {
	if (NS4) {
		document.layers[elem].visibility = "hide";
	}else if (IE4){
		document.all[elem].style.visibility="hidden";
	}else if (DOM){
		document.getElementById(elem).style.visibility = "hidden";
	}
}

function menuout(elem){
	timer_ctrl = window.setTimeout("hidemenu('"+elem+"')",1000);
}