// ---------------------NAVBAR------------------------

var timeout = 500;
var hold = 0;
var navitem	= 0;

function navopen(id){	// open hidden layer
navhold(); // cancel hold

if(navitem) navitem.style.visibility = 'hidden'; // close old layer

navitem = document.getElementById(id); // get new layer and show it
navitem.style.visibility = 'visible';
}

function navclose(){ // close showed layer
if(navitem) navitem.style.visibility = 'hidden';
}

function navexit(){ // go hold
hold = window.setTimeout(navclose, timeout);
}

function navhold(){ // cancel hold
if(hold){
window.clearTimeout(hold);
hold = null;
}
}

document.onclick = navclose; // close layer when click-out

//------------------BILLBOARD---------------------------
pix = new Array();

pix[0] = "media/ethics.jpg";
pix[1] = "media/integrity.jpg";
pix[2] = "media/quality.jpg";

var i = 0;
var counter = 1;

function billboard(){
showtime = setInterval("change()", 2000);
}

function change(){
document.images.pic.src = pix[i];
i = i + 1;
if (i > (pix.length - 1)) {i = 0; counter = counter + 1;}
if (counter > 6) {clearInterval(showtime);}
}