// Preload Rollovers
if (document.images)
{
  nav1 = new Image(150,19); 
  nav1.src="images/structure/navigation/btn_OurPopcorn_on.jpg";
  
  nav2 = new Image(150,19); 
  nav2.src="images/structure/navigation/btn_OurPopcorn_off.jpg";
  
  nav3 = new Image(117,19); 
  nav3.src="images/structure/navigation/btn_FamilyTime_on.jpg";
  
  nav4 = new Image(117,19); 
  nav4.src="images/structure/navigation/btn_FamilyTime_off.jpg";
  
  nav5 = new Image(158,19); 
  nav5.src="images/structure/navigation/btn_HealthySnacking_on.jpg";
  
  nav6 = new Image(158,19); 
  nav6.src="images/structure/navigation/btn_HealthySnacking_off.jpg";
  
  nav7 = new Image(131,19); 
  nav7.src="images/structure/navigation/btn_NewsOffers_on.jpg";
  
  nav8 = new Image(131,19); 
  nav8.src="images/structure/navigation/btn_NewsOffers_off.jpg";
  
  nav9 = new Image(106,19); 
  nav9.src="images/structure/navigation/btn_BuyOrville_on.jpg"; 

  nav10 = new Image(106,19); 
  nav10.src="images/structure/navigation/btn_BuyOrville_off.jpg";
  
  nav11 = new Image(662,31); 
  nav11.src="images/structure/navigation/ourPopcorn_sub.gif";
  
  nav12 = new Image(662,31); 
  nav12.src="images/structure/navigation/familyTime_sub.gif";
  
  nav13 = new Image(662,31); 
  nav13.src="images/structure/navigation/healthySnacking_sub.gif";
  
  nav14 = new Image(662,31); 
  nav14.src="images/structure/navigation/newsOffers_sub.gif";
  
  nav15 = new Image(662,31); 
  nav15.src="images/structure/navigation/buyOrville_sub.gif";
}

var timerID = null;
var timerOn = false;
var timecount = 500;

var imgPath = 'images/structure/navigation/';

// Highlight image
function mainNavOn(id) {
	document.getElementById("main_" + id).src = imgPath + "btn_" + id + "_on.jpg";
}

// Turn off image highlight
function mainNavOff(id) {
	document.getElementById("main_" + id).src = imgPath + "btn_" + id + "_off.jpg";
}

// Show Subnav
function subOn(id) {
	stopTime();
	subHide();
	mainNavOn(id);
	document.getElementById("sub_" + id).style.display = "block";	
}

// Set Subnav Off
function subOff(id) {
	mainNavOff(id);
	document.getElementById("sub_" + id).style.display = "none";
}

function subHide() {
	subOff('OurPopcorn');
	subOff('FamilyTime');
	subOff('HealthySnacking');
	subOff('NewsOffers');
}

function startTime() {
	if (timerOn == false) {
	timerID=setTimeout( "subHide()" , timecount);
	timerOn = true;
	}
}

function stopTime() {
	if (timerOn) {
	clearTimeout(timerID);
	timerID = null;
	timerOn = false;
	}
}