var numimages   = 5;
var images      = new Array();
var imagesOn    = new Array();
var names;
var selected    = 0;
var path		= '../';



function setI(n) {
	name = "navig" + n;
	if (n == 2) {
		if (selected == 1) {
			document.getElementById('navig1').style.backgroundImage = 'url(' + path + 'images/navig/home2_on.gif)';
		} else {
			document.getElementById('navig1').style.backgroundImage = 'url(' + path + 'images/navig/home2.gif)';
		}
		document.getElementById(name).style.backgroundImage = 'url(' + imagesOn[n].src + ')';
	} else if (n == 1 && selected == 2) {
		document.getElementById('navig1').style.backgroundImage = 'url(../images/navig/home2_on.gif)';
	} else {
		document.getElementById(name).style.backgroundImage = 'url(' + imagesOn[n].src + ')';
	}
}

function unsetI(n) {
	name = "navig" + n;
	if (n == 2) {
		if (selected == 1) {
			document.getElementById('navig1').style.backgroundImage = 'url(' + path + 'images/navig/home_on.gif)';
		} else {
			document.getElementById('navig1').style.backgroundImage = 'url(' + path + 'images/navig/home.gif)';
		}
		document.getElementById(name).style.backgroundImage = 'url(' + images[n].src + ')';
	} else if (n == 1 && selected == 2) {
		document.getElementById('navig1').style.backgroundImage = 'url(../images/navig/home2.gif)';
	} else {
		document.getElementById(name).style.backgroundImage = 'url(' + images[n].src + ')';
	}
}

function initnavig(type) {
	if (type == 0) {
		names  	= new Array("home", "programm", "vortragende", "infos", "anmeldung");
	// home
	} else if (type == 1) {
		names	= new Array("home", "programm", "vortragende", "infos", "anmeldung");
		path	= '';
	// programm
	} else if (type == 2) {
		names	= new Array("home2", "programm", "vortragende", "infos", "anmeldung2");
	} else {
		names	= new Array("home", "programm", "vortragende", "infos", "anmeldung2");
	}
	for (i=1; i<=numimages; i++) {
		image       = new Image();
		imageOn     = new Image();
		name        = names[i-1];
		image.src   = path + "images/navig/" + name + ".gif";
		imageOn.src = path + "images/navig/" + name + "_on.gif";
		images[i]   = image;
		imagesOn[i] = imageOn;
	}
	// ausgewaehlten punkt aktivieren
	if (type >= 0 && type <= 5) {
		name = 'navig'+type;
		document.getElementById(name).style.backgroundImage = 'url(' + imagesOn[type].src + ')';
		selected = type;
	}
	if (type == 2) {
		document.getElementById('navig1').style.backgroundImage = 'url(' + images[1].src + ')';
	}
}