var u = new Array(11);
u[0]='nieuws';
u[1]='oorsprong';
u[2]='vervaardiging';
u[3]='eigen_merken';
u[4]='brouwen_derden';
u[5]='markten';
u[6]='bezoeken';
u[7]='routebeschrijving';
u[8]='organigram';
u[9]='logos';
u[10]='kontakten';

var curr=0;

// find index of u[] contained in document.location
function findCurr()
{
	var found = -1;
	var loc = ''+document.location;
	for (i=0; found==-1 && i<u.length; i++) {
		found = loc.indexOf(u[i]);
		if (found!=-1) {
			found= i;
		}
	}
	return found;
}


// is current page same as index navid?
function isCurr(navid)
{
	//navid is like nav01, nav02
	return navid.substring(3,navid.length) == curr;
}

function selectFirst()
{
	// curr = index of current page, or 0
	curr=1+findCurr();
	if (curr!=0) {
		navhigh('nav'+curr, 'navigon');
	}
}

// Thanks Peter-Paul Koch and its wonderful pages at
// http://www.quirksmode.org/js/dhtmloptions.html

// Support only DOM Level 1 (W3C) and IE old DOM, not old NS one (too buggy)
var DHTML = (document.getElementById || document.all);

// return object x found by name via DOM Level 1 or old IE Dom
// ps x.style contains the obj's CSS style 
function getObj(name)
{
	if (!DHTML) return;
    	if (document.getElementById) { // DOM Level 1
		return document.getElementById(name);
	} else if (document.all) { // old IE DOM
		return document.all[name];
	}
}
var prevNb = 0;

function changeClass(x,classname)
{
	if (x.className) {
		x.className=classname;
	} else if (x.style) {
		x.style=classname;
	}
}

function navhigh(navid,classname)
{
	if (!DHTML) return;
	var nav = getObj(navid);
	changeClass(nav,classname);
}

function navlow(navid,classname)
{
	if (!DHTML) return;
	if (isCurr(navid)) return;
	var nav = getObj(navid);
	changeClass(nav,classname);
}