function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		nav_01_over = newImage("images/navbar/nav_01_over.jpg");
		nav_02_over = newImage("images/navbar/nav_02_over.jpg");
		nav_03_over = newImage("images/navbar/nav_03_over.jpg");
		nav_04_over = newImage("images/navbar/nav_04_over.jpg");
		nav_05_over = newImage("images/navbar/nav_05_over.jpg");
		nav_06_over = newImage("images/navbar/nav_06_over.jpg");
		nav_06_over = newImage("images/navbar/nav_07_over.jpg");
		preloadFlag = true;
	}
}

function showSub(id){
	if(document.getElementById("navOpen").value != id){
		hideSub(document.getElementById("navOpen").value);
	}
	if(document.getElementById("nav"+id).style.display == "none"){
		document.getElementById("nav"+id).style.display = "";
	}else{
		document.getElementById("nav"+id).style.display = "none";
	}
	document.getElementById("navOpen").value = id;
}

function hideSub(id){
if(id != 0){
	document.getElementById("nav"+id).style.display = "none";
	}
}
var openWindow;
function openWindow(URL,Name,features) {
        window.open(URL,Name,features);
}

function showSubSub(){
if(document.getElementById("nav4").style.display == "none"){
	document.getElementById("nav4").style.display = "";
}else{
	document.getElementById("nav4").style.display = "none";
}
}

function showGal(id){
	hideGallery();
	document.getElementById("gal"+id).style.display = "";
}

function hideGallery(){
for(i=1;i<4;i++){
	document.getElementById("gal"+i).style.display = "none";
}
}