var level = 0;

function setLevel(page_level)
{
	level = page_level;
}

function menuItem(text, link, curPage)
{
	this.text = text;
	
	levelStr = "";
	for (i = 0 ; i < level; i = i + 1)
		levelStr = levelStr + "../";
	
	this.link = levelStr + link;
	this.current = (link == curPage); 			
}

// JavaScript Document
function writeMenuItem (mItem)
{
	if (mItem.current == true)
		document.write('<div class="nav_item nav_item_current">');
	else
		document.write('<div class="nav_item">');
	
	document.write('<a href="' + mItem.link + '">' + mItem.text + '</a></div>');
}

function writeMenuProduct(curPage)
{
	items = new Array();
	items.push(new menuItem("Download", "download.html", curPage));
	items.push(new menuItem("New features", "new_in_ET.html",curPage ));
	items.push(new menuItem("Extensions", "extensions.html",curPage ));
	items.push(new menuItem("ET Review", "product.html",curPage ));
	items.push(new menuItem("Upgrade", "upgrade.html",curPage ));
	items.push(new menuItem("F.A.Q.", "faq.html",curPage ));
	items.push(new menuItem("Support", "support.html",curPage ));

	for (i = 0; i < items.length; i++)
		writeMenuItem(items[i]);
}

function writeMenuTechnology(curPage)
{
	items = new Array();
	items.push(new menuItem("Video", "video_list.html", curPage));
	items.push(new menuItem("Technology", "tech_list.html",curPage ));

	for (i = 0; i < items.length; i++)
		writeMenuItem(items[i]);
}

function writeMenuMain(curPage)
{
	items = new Array();
	items.push(new menuItem("News", "news.html",curPage ));
	items.push(new menuItem("About us", "about.html",curPage ));
	items.push(new menuItem("GIS-links", "links.html",curPage ));

	for (i = 0; i < items.length; i++)
		writeMenuItem(items[i]);
}

function writeMenuPurchase(curPage)
{
	items = new Array();
	items.push(new menuItem("Price", "price.html",curPage ));
	items.push(new menuItem("Order",  "buy_form.html",curPage ));
	items.push(new menuItem("Resellers",  "reseller_list.html",curPage ));

	for (i = 0; i < items.length; i++)
		writeMenuItem(items[i]);
}

function writeNavigation (menu, curPage)
{
	document.write('<div class="nav_body">' + 
				   '<div class="nav_line"><img src="spacer.gif" width=1 height=1></div>');

	if (menu == "product")
		writeMenuProduct(curPage);

    if (menu == "technology")
		writeMenuTechnology(curPage);

	if (menu == "main")
		writeMenuMain(curPage);

	if (menu == "purchase")
		writeMenuPurchase(curPage);

	document.write('<div class="nav_line"><img src="spacer.gif" width=1 height=1></div>' + "</div>");
}