if (document.images) {
	toc_item["contact"] = new toc_item ("common/nav/top/contact_over.gif", "common/nav/top/contact_off.gif", "Contact Us");
	toc_item["login"] = new toc_item ("common/nav/top/login_over.gif", "common/nav/top/login_off.gif", "Customer Login");
	toc_item["search"] = new toc_item ("common/nav/top/search_over.gif", "common/nav/top/search_off.gif", "Search");
	toc_item["sitemap"] = new toc_item ("common/nav/top/sitemap_over.gif", "common/nav/top/sitemap_off.gif", "Site Map");
	toc_item["home"] = new toc_item ("common/nav/top/home_over.gif", "common/nav/top/home_off.gif", "Home");

	toc_item["solutionsImg"] = new toc_item ("common/nav/main/solutions_over.gif", "common/nav/main/solutions_off.gif", "Solutions");
	toc_item["productsImg"] = new toc_item ("common/nav/main/products_over.gif", "common/nav/main/products_off.gif", "Products");
	toc_item["marketsImg"] = new toc_item ("common/nav/main/markets_over.gif", "common/nav/main/markets_off.gif", "Markets");
	toc_item["servicesImg"] = new toc_item ("common/nav/main/services_over.gif", "common/nav/main/services_off.gif", "Services & Support");
	toc_item["resourcesImg"] = new toc_item ("common/nav/main/resources_over.gif", "common/nav/main/resources_off.gif", "Resource Center");
	toc_item["companyImg"] = new toc_item ("common/nav/main/company_over.gif", "common/nav/main/company_off.gif", "Company");
	toc_item["investorImg"] = new toc_item ("common/nav/main/investor_over.gif", "common/nav/main/investor_off.gif", "Investors");

	toc_item["terms"] = new toc_item ("common/nav/bottom/terms_over.gif", "common/nav/bottom/terms_off.gif", "Legal Notices");
	toc_item["privacy"] = new toc_item ("common/nav/bottom/privacy_over.gif", "common/nav/bottom/privacy_off.gif", "Privacy Policy");
	toc_item["symbol"] = new toc_item ("common/nav/bottom/symbol_over.gif", "common/nav/bottom/symbol_off.gif", "NASDAQ Symbol: TLAB");

}

function imageOn(itemID) {
	if (document.images) {
		document.images[itemID].src = toc_item[itemID].toc_img_on.src;
		self.status = toc_item[itemID].msg;
	}
}

function imageOff(itemID) {
	if (document.images) {
		document.images[itemID].src = toc_item[itemID].toc_img_off.src;
		self.status = "Tellabs";
	}
}

function toc_item (sourceOn,sourceOff,msg) {
	this.sourceOn = sourceOn;
	this.sourceOff = sourceOff;
	this.msg = msg;

	if (document.images) {
		this.toc_img_on = new Image();
		this.toc_img_off = new Image();
		this.toc_img_on.src = "/images/" + this.sourceOn;
		this.toc_img_off.src = "/images/" + this.sourceOff;

	}
}

function navpon(item) {
	var navchildren = document.getElementById("navbox").childNodes;
	for (var i = 0; i < navchildren.length; i++) {
		if (item == navchildren[i]) {
			item.style.backgroundImage='url(/images/common/nav/p_on.gif)';
		}
	}
}
function navpoff(item) {
	var navchildren = document.getElementById("navbox").childNodes;
	for (var i = 0; i < navchildren.length; i++) {
		if (item == navchildren[i]) {
			item.style.backgroundImage='url(/images/common/nav/p_off.gif)';
		}
	}
}
function navlion(item) {
	item.style.backgroundImage='url(/images/common/nav/li_on.gif)';
}
function navlioff(item) {
	item.style.backgroundImage='url(/images/common/nav/li_off.gif)';
}