//preload rollover images
if (document.images) {
	home_over = new Image(60,11); 
	home_over.src="images/nav/home_over.gif";
	
	about_over = new Image(82,11); 
	about_over.src="images/nav/about_over.gif";
	history_button = new Image(80,29); 
	history_button.src="images/nav/history.gif";
	history_over = new Image(80,29); 
	history_over.src="images/nav/history_over.gif";
	management_team = new Image(80,29); 
	management_team.src="images/nav/management_team.gif";
	management_team_over = new Image(80,29); 
	management_team_over.src="images/nav/management_team_over.gif";
	virtual_tour = new Image(80,18); 
	virtual_tour.src="images/nav/virtual_tour.gif";
	virtual_tour_over = new Image(80,18); 
	virtual_tour_over.src="images/nav/virtual_tour_over.gif";
	faqs = new Image(80,18); 
	faqs.src="images/nav/faqs.gif";
	faqs_over = new Image(80,18); 
	faqs_over.src="images/nav/faqs_over.gif";
	testimonials = new Image(80,18); 
	testimonials.src="images/nav/testimonials.gif";
	testimonials_over = new Image(80,18); 
	testimonials_over.src="images/nav/testimonials_over.gif";
	
	studies = new Image(75,18); 
	studies.src="images/nav/studies.gif";
	studies_over = new Image(75,18); 
	studies_over.src="images/nav/studies_over.gif";
	
	referral_program = new Image(80,29); 
	referral_program.src="images/nav/referral_program.gif";
	referral_program_over = new Image(80,29); 
	referral_program_over.src="images/nav/referral_program_over.gif";
	careers = new Image(80,18); 
	careers.src="images/nav/careers.gif";
	careers_over = new Image(80,18); 
	careers_over.src="images/nav/careers_over.gif";
	
	us_facilities_over = new Image(110,11); 
	us_facilities_over.src="images/nav/us_facilities_over.gif";
	telehouse_center = new Image(94,29); 
	telehouse_center.src="images/nav/telehouse_center.gif";
	telehouse_center_over = new Image(94,29); 
	telehouse_center_over.src="images/nav/telehouse_center_over.gif";
	twentyfivebroadway = new Image(94,18); 
	twentyfivebroadway.src="images/nav/25broadway.gif";
	twentyfivebroadway_over = new Image(94,18); 
	twentyfivebroadway_over.src="images/nav/25broadway_over.gif";
	la_center = new Image(94,32); 
	la_center.src="images/nav/la_center.gif";
	la_center_over = new Image(94,32); 
	la_center_over.src="images/nav/la_center_over.gif";
	
	global_facilities_over = new Image(131,11); 
	global_facilities_over.src="images/nav/global_facilities_over.gif";
	japan = new Image(63,29); 
	japan.src="images/nav/japan.gif";
	japan_over = new Image(63,29); 
	japan_over.src="images/nav/japan_over.gif";
	europe = new Image(63,18); 
	europe.src="images/nav/europe.gif";
	europe_over = new Image(63,18); 
	europe_over.src="images/nav/europe_over.gif";
	asia = new Image(63,18); 
	asia.src="images/nav/asia.gif";
	asia_over = new Image(63,18); 
	asia_over.src="images/nav/asia_over.gif";
	safrica = new Image(75,18); 
	safrica.src="images/nav/safrica.gif";
	safrica_over = new Image(75,18); 
	safrica_over.src="images/nav/safrica_over.gif";
	
	services = new Image(77,11); 
	services.src="images/nav/services.gif";
	services_over = new Image(77,11); 
	services_over.src="images/nav/services_over.gif";
	call_center = new Image(103,29); 
	call_center.src="images/nav/call_center.gif";
	call_center_over = new Image(103,29); 
	call_center_over.src="images/nav/call_center_over.gif";
	colocation = new Image(103,18); 
	colocation.src="images/nav/colocation.gif";
	colocation_over = new Image(103,18); 
	colocation_over.src="images/nav/colocation_over.gif";
	data_centers = new Image(103,18); 
	data_centers.src="images/nav/data_centers.gif";
	data_centers_over = new Image(103,18); 
	data_centers_over.src="images/nav/data_centers_over.gif";
	disaster_recovery = new Image(103,18); 
	disaster_recovery.src="images/nav/disaster_recovery.gif";
	disaster_recovery_over = new Image(103,18); 
	disaster_recovery_over.src="images/nav/disaster_recovery_over.gif";
	global_interlink = new Image(103,18); 
	global_interlink.src="images/nav/global_interlink.gif";
	global_interlink_over = new Image(103,18); 
	global_interlink_over.src="images/nav/global_interlink_over.gif";
	ip_transit = new Image(75,18); 
	ip_transit.src="images/nav/ip_transit.gif";
	ip_transit_over = new Image(75,18); 
	ip_transit_over.src="images/nav/ip_transit_over.gif";
	managed_services = new Image(103,18); 
	managed_services.src="images/nav/managed_services.gif";
	managed_services_over = new Image(103,18); 
	managed_services_over.src="images/nav/managed_services_over.gif";
	network_consulting = new Image(103,29); 
	network_consulting.src="images/nav/network_consulting.gif";
	network_consulting_over = new Image(103,29); 
	network_consulting_over.src="images/nav/network_consulting_over.gif";
	peering = new Image(103,18); 
	peering.src="images/nav/peering.gif";
	peering_over = new Image(103,18); 
	peering_over.src="images/nav/peering_over.gif";
	ping_monitoring = new Image(103,18); 
	ping_monitoring.src="images/nav/ping_monitoring.gif";
	ping_monitoring_over = new Image(103,18); 
	ping_monitoring_over.src="images/nav/ping_monitoring_over.gif";
	tape_backup = new Image(103,18); 
	tape_backup.src="images/nav/tape_backup.gif";
	tape_backup_over = new Image(103,18); 
	tape_backup_over.src="images/nav/tape_backup_over.gif";
	
	partners_over = new Image(83,11); 
	partners_over.src="images/nav/partners_over.gif";
	
	press_over = new Image(61,11); 
	press_over.src="images/nav/press_over.gif";
	newsletters = new Image(88,29); 
	newsletters.src="images/nav/newsletters.gif";
	newsletters_over = new Image(88,29); 
	newsletters_over.src="images/nav/newsletters_over.gif";
	press_coverage = new Image(88,18); 
	press_coverage.src="images/nav/press_coverage.gif";
	press_coverage_over = new Image(88,18); 
	press_coverage_over.src="images/nav/press_coverage_over.gif";
	press_releases = new Image(88,18); 
	press_releases.src="images/nav/press_releases.gif";
	press_releases_over = new Image(88,18); 
	press_releases_over.src="images/nav/press_releases_over.gif";
	
	events_over = new Image(67,11); 
	events_over.src="images/nav/events_over.gif";
	event_videos = new Image(77,29); 
	event_videos.src="images/nav/event_videos.gif";
	event_videos_over = new Image(77,29); 
	event_videos_over.src="images/nav/event_videos_over.gif";
	event_listings = new Image(77,18); 
	event_listings.src="images/nav/event_listings.gif";
	event_listings_over = new Image(77,18); 
	event_listings_over.src="images/nav/event_listings_over.gif";
	
	client_login_over = new Image(103,11); 
	client_login_over.src="images/nav/client_login_over.gif";
	
	contact_over = new Image(60,11); 
	contact_over.src="images/nav/contact_over.gif";
	
}


	
//function openwin() { window.open("","x" , 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,width=640,height=800,resizable=1'); }

//function to check for valid email address
function check_email(e){
	ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";
	
	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
			return false;
		}
	} 
	
	if (document.images) {
		re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
		re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
		if (!e.match(re) && e.match(re_two)) {
			return (-1);
		} 
	}
	
}

//validation for newsletter subscribe form	
function check_subscribe(){
	if(document.forms['form_subscribe'].name.value == ''){
		alert("Please enter your name");
		return false;
	}
	if(document.forms['form_subscribe'].email.value == ''){
		alert("Please enter your email");
		return false;
	}
	
	var email_check = check_email(document.forms['form_subscribe'].elements['email'].value);

	if(!email_check){
		alert("The email you entered is not a valid email address");
		return false;
	}	
}




	
