if (document.images) {
mansion_down = new Image
explore_down = new Image
learning_down = new Image
events_down = new Image
friends_down = new Image
contact_down = new Image 

mansion_up = new Image
explore_up = new Image
learning_up = new Image
events_up = new Image
friends_up = new Image
contact_up = new Image 

mansion_down.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/mansion.gif'
explore_down.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/explore.gif'
learning_down.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/learning.gif'
events_down.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/events.gif'
friends_down.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/friends.gif'
contact_down.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/contact.gif'

mansion_up.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/mansion_up.gif'
explore_up.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/explore_up.gif'
learning_up.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/learning_up.gif'
events_up.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/events_up.gif'
friends_up.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/friends_up.gif'
contact_up.src = 'http://www.valentines.org.uk/valentines_mansion/images/navbar/contact_up.gif' 
}
else {
mansion_down = ""
explore_down = ""
learning_down = ""
events_down = ""
friends_down = ""
contact_down = "" 

mansion_up = ""
explore_up = ""
learning_up = ""
events_up = ""
friends_up = ""
contact_up = "" 

document.mansion = ""
document.explore= ""
document.learning= ""
document.events= ""
document.friends= ""
document.contact = "" 
}