var which='';
var last='';
var wait=false;
var newNav = 0;
var active;

var navHi = new Array();
var navLo = new Array();


// preload images
for (i=1; i<=14; i++) {
	if (i<10){
		navHi[i] = new Image();
		navHi[i].src = "images/nav_0" + i + "_hi.gif";
		navLo[i] = new Image();
		navLo[i].src = "images/nav_0" + i + "_lo.gif";
	}
	else {
		navHi[i] = new Image();
		navHi[i].src = "images/nav_" + i + "_hi.gif";
		navLo[i] = new Image();
		navLo[i].src = "images/nav_" + i + "_lo.gif";	
	}
}

// mouseOver
function sethi(which) {
	if (document.images) {
		if (which<10)
			whichButton = "nav0" + which;
		else
			whichButton = "nav" + which;
			
		document.images[whichButton].src=navHi[which].src;
		return true;
	}
	else return false;
}

// mouseOut
function setlo(which) {
	if (document.images && active != which) {
		if (which<10)
			whichButton = "nav0" + which;
		else
			whichButton = "nav" + which;
			
		document.images[whichButton].src=navLo[which].src;
		return true;
	}
	else return false;
}

function setActive(which) {
	active=which;
	sethi(which);
}

function showmenue(which) {
	newNav = 1;
	if (last =='' || last == which) {
		if(document.layers && document.layers[which]) document.layers[which].visibility="show";
		if((!document.all)&&(document.getElementById)) document.getElementById(which).style.visibility="visible";
		if((document.all)&&(document.all[which]))document.all[which].style.visibility="visible";
		last = which;
	}
	else {
		hidemenue(last);
		if(document.layers && document.layers[which]) document.layers[which].visibility="show";
		if((!document.all)&&(document.getElementById)) document.getElementById(which).style.visibility="visible";
		if((document.all)&&(document.all[which])) document.all[which].style.visibility="visible";
		last = which;
	}
}

function hidemenue(which) {
	if(document.layers  && document.layers[which]) document.layers[which].visibility="hide"
	if((!document.all)&&(document.getElementById)) document.getElementById(which).style.visibility="hidden";
	if(document.all) document.all[which].style.visibility="hidden";
}

// open new window
function oeffneFenster(seitenName,instanzName,fensterBreite,fensterHoehe) {
    breiteBildschirm = screen.availWidth;
    hoeheBildschirm = screen.availHeight - 20;
    randLinks = breiteBildschirm/2-(fensterBreite/2);
    randOben = hoeheBildschirm/2-(fensterHoehe/2);
    fensterParameter = "top="+randOben+",left="+randLinks+",width="+fensterBreite+",height="+fensterHoehe+",scrollbars=no,toolbar=no,status=no,resizeable=no,location=no";
    satellitenFenster = window.open(seitenName,instanzName,fensterParameter);
	satellitenFenster.focus();
}