//"HOME, SEARCH, SITEMAP, help AND CONTACT"  IN THE HORIZONTAL TOPBAR

topbarButtons_section="dummy"
topbarButtons_clicked = false

// PRE-LOAD IMAGES BUTTONS IN TOPBAR
if(document.images) {

button_help_off = new Image()
button_help_off.src = "/images/button_help_off.gif"
button_help_on = new Image()
button_help_on.src = "/images/button_help_on.gif"

button_contact_off = new Image()
button_contact_off.src = "/images/button_contact_off.gif"
button_contact_on = new Image()
button_contact_on.src = "/images/button_contact_on.gif"

button_search_off = new Image()
button_search_off.src = "/images/button_search_off.gif"
button_search_on = new Image()
button_search_on.src = "/images/button_search_on.gif"

button_sitemap_off = new Image()
button_sitemap_off.src = "/images/button_sitemap_off.gif"
button_sitemap_on = new Image()
button_sitemap_on.src = "/images/button_sitemap_on.gif"

button_home_off = new Image()
button_home_off.src = "/images/button_home_off.gif"
button_home_on = new Image()
button_home_on.src = "/images/button_home_on.gif"

addresses_searchbox_off = new Image()
addresses_searchbox_off.src = "/images/searchbox/ft_addresses_off.gif"
addresses_searchbox_on = new Image()
addresses_searchbox_on.src = "/images/searchbox/ft_addresses_on.gif"

aww_searchbox_off = new Image()
aww_searchbox_off.src = "/images/searchbox/ft_aww_off.gif"
aww_searchbox_on = new Image()
aww_searchbox_on.src = "/images/searchbox/ft_aww_on.gif"

search_searchbox_off = new Image()
search_searchbox_off.src = "/images/searchbox/ft_search_off.gif"
search_searchbox_on = new Image()
search_searchbox_on.src = "/images/searchbox/ft_search_on.gif"

visit_searchbox_off = new Image()
visit_searchbox_off.src = "/images/searchbox/ft_visit_off.gif"
visit_searchbox_on = new Image()
visit_searchbox_on.src = "/images/searchbox/ft_visit_on.gif"

about_hnav_off = new Image()
about_hnav_off.src = "/images/knop_about_off.gif"
about_hnav_on = new Image()
about_hnav_on.src = "/images/knop_about_on.gif"

news_hnav_off = new Image()
news_hnav_off.src = "/images/knop_news_off.gif"
news_hnav_on = new Image()
news_hnav_on.src = "/images/knop_news_on.gif"

lectures_hnav_off = new Image()
lectures_hnav_off.src = "/images/knop_lectures_off.gif"
lectures_hnav_on = new Image()
lectures_hnav_on.src = "/images/knop_lectures_on.gif"

addresses_hnav_off = new Image()
addresses_hnav_off.src = "/images/knop_addresses_off.gif"
addresses_hnav_on = new Image()
addresses_hnav_on.src = "/images/knop_addresses_on.gif"

vacancies_hnav_off = new Image()
vacancies_hnav_off.src = "/images/knop_vacancies_off.gif"
vacancies_hnav_on = new Image()
vacancies_hnav_on.src = "/images/knop_vacancies_on.gif"

togglingText_empty = new Image()
togglingText_empty.src = "/images/togglingText_empty.gif"
togglingText_button_help = new Image()
togglingText_button_help.src = "/images/togglingText_button_help.gif"
togglingText_button_contact = new Image()
togglingText_button_contact.src = "/images/togglingText_button_contact.gif"
togglingText_button_search = new Image()
togglingText_button_search.src = "/images/togglingText_button_search.gif"
togglingText_button_sitemap = new Image()
togglingText_button_sitemap.src = "/images/togglingText_button_sitemap.gif"
togglingText_button_home = new Image()
togglingText_button_home.src = "/images/togglingText_button_home.gif"

}

// ONMOUSEOVER FUNCTIONS 
function topbarButtons_imageOn(image){
	if (document.images){
		imgOn = eval(image + "_on.src");
		document [image].src = imgOn;
		if(topbarButtons_clicked!=true && (image=='button_search'||image=='button_sitemap'||image=='button_contact'||image=='button_help'||image=='button_home')){
			src = eval("togglingText_" + image + ".src")
			document ['togglingText'].src = src
		}
	}
}

function topbarButtons_imageOff(image){
	if (document.images && topbarButtons_section != image){
		imgOff = eval(image + "_off.src");
		document [image].src = imgOff;
		if(topbarButtons_clicked==false && (image=='button_search'||image=='button_sitemap'||image=='button_contact'||image=='button_help'||image=='button_home')){
			document ['togglingText'].src = togglingText_empty.src
		}
	}
}       

function topbarButtons_imageOffold(image){
	if(image=='button_search'||image=='button_sitemap'||image=='button_contact'||image=='button_help'||image=='button_home'){
		topbarButtons_clicked=true
	}
	if (document.images && topbarButtons_section != 'dummy'){
		imgOff = eval(image + "_off.src");
		document [image].src = imgOff;
	}
}