function hide(id) {
	document.getElementById(id).style.visibility = 'hidden';
}

function show(id) {
	document.getElementById(id).style.visibility = 'visible';
}

function login() {
	var usr = document.getElementById("un").value;
	var pswd = document.getElementById("pw").value;

	window.location = 'http://' + usr + ':' + pswd + '@flic-project.info/intern/index.html';
}



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 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) {
		submenu_top_over = newImage("images/submenu_top_over.gif");
		submenu_left_over = newImage("images/submenu_left_over.gif");
		downloads_over = newImage("images/downloads_over.gif");
		downloads_over016 = newImage("images/downloads_over-16.gif");
		submenu_right_over = newImage("images/submenu_right_over.gif");
		project_info_over = newImage("images/project-info_over.gif");
		project_info_over021 = newImage("images/project-info_over-21.gif");
		products_and_availability_over = newImage("images/products-and-availability_over.gif");
		products_and_availability_over024 = newImage("images/products-and-availability_over-24.gif");
		login_corner_shadow_over = newImage("images/login_corner_shadow_over.gif");
		login_top_shadow_over = newImage("images/login_top_shadow_over.gif");
		menu_home_over = newImage("images/menu_home_over.gif");
		menu_project_over = newImage("images/menu_project_over.gif");
		menu_forum_over = newImage("images/menu_forum_over.gif");
		menu_links_over = newImage("images/menu_links_over.gif");
		menu_contact_over = newImage("images/menu_contact_over.gif");
		menu_login_over = newImage("images/menu_login_over.gif");
		login_window_over = newImage("images/login_window_over.gif");
		preloadFlag = true;
	}
}