function navOverview(state) {
	if (state == "on") document.overview.src='./img/topnav/nav_overview_hi.gif';
	if (state == "off") document.overview.src='./img/topnav/nav_overview.gif';
}

function navSolutions(state) {
	if (state == "on") document.solutions.src='./img/topnav/nav_solutions_hi.gif';
	if (state == "off") document.solutions.src='./img/topnav/nav_solutions.gif';
}

function navNews(state) {
	if (state == "on") document.news.src='./img/topnav/nav_news_hi.gif';
	if (state == "off") document.news.src='./img/topnav/nav_news.gif';
}

function navCareers(state) {
	if (state == "on") document.careers.src='./img/topnav/nav_careers_hi.gif';
	if (state == "off") document.careers.src='./img/topnav/nav_careers.gif';
}

function navContact(state) {
	if (state == "on") document.contact.src='./img/topnav/nav_contact_hi.gif';
	if (state == "off") document.contact.src='./img/topnav/nav_contact.gif';
}

function navHome(state) {
	if (state == "on") document.home.src='./img/topnav/nav_home_hi.gif';
	if (state == "off") document.home.src='./img/topnav/nav_home.gif';
}

function navSearch(state) {
	if (state == "on") document.search.src='./img/topnav/nav_search_hi.gif';
	if (state == "off") document.search.src='./img/topnav/nav_search.gif';
}