// Copyright 2006-2007 javascript-array.com

//highlight top navi item
function hoverNavItem(imageid) {
	document.getElementById(imageid).src = "img/navi/" + imageid + ".png";
	
}

//remove highlight from top navi item
function unhoverNavItem(imageid) {
	document.getElementById(imageid).src = "img/navi/" + imageid + "_sw.png";
	
}

// open hidden layer
function mopen(id) {	
	document.getElementById(id).style.visibility = 'visible';
}

//close showed layer
function mclose(id) {
	document.getElementById(id).style.visibility = 'hidden';
}