var contactShowing = false;

userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function initialize(){
	preloadImages();
	if(screen.width > 1024 && screen.height > 768){
		if(window.outerWidth != 1000 && window.outerHeight != 830){
			window.resizeTo(1000,830);
		}
	}	
}

function findElement(n,ly) {
	if (browserVers < 4)		return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		tab_activities_over = newImage("images/tab_activities-over.gif");
		tab_accomodation_over = newImage("images/tab_accomodation-over.gif");
		tab_workshop_over = newImage("images/tab_workshop-over.gif");
		menu_home_over = newImage("images/menu_home-over.gif");
		menu_inside_over = newImage("images/menu_inside-over.gif");
		menu_email_over = newImage("images/menu_email-over.gif");
		menu_news_over = newImage("images/menu_news-over.gif");
		menu_contact_over = newImage("images/menu_contact-over.gif");
		menu_links_over = newImage("images/menu_links-over.gif");
		menu_feedback_over = newImage("images/menu_feedback-over.gif");
		menu_sitemap_over = newImage("images/menu_sitemap-over.gif");
		footer_credits_over = newImage("images/footer_credits-over.gif");
		preloadFlag = true;
	}
}

function showContact(){
	if(contactShowing){
		return;
	}
	else{
		document.getElementById("contact").style.visibility = "visible";
		contactShowing = true;
	}
}

function hideContact(){
	document.getElementById("contact").style.visibility = "hidden";
	contactShowing = false;
}