homeUp=new Image(157,20)
 homeUp.src="Images/home.gif"
 homeDown=new Image(157,20)
 homeDown.src="Images/home_f2.gif"
 
 charitiesUp=new Image(157,20)
 charitiesUp.src="Images/charities.gif" 
 charitiesDown=new Image(157,20)
 charitiesDown.src="Images/charities_f2.gif"
 
 sommeUp=new Image(157,20)
 sommeUp.src="Images/somme.gif"
 sommeDown=new Image(157,20)
 sommeDown.src="Images/somme_f2.gif"
 
 letterUp=new Image(157,20)
 letterUp.src="Images/letter.gif"
 letterDown=new Image(157,20)
 letterDown.src="Images/letter_f2.gif"
 
 linksUp=new Image(157,20)
 linksUp.src="Images/links.gif"
 linksDown=new Image(157,20) 
 linksDown.src="Images/links_f2.gif"
 
 routeUp=new Image(157,20)
 routeUp.src="Images/route.gif"
 routeDown=new Image(157,20) 
 routeDown.src="Images/route_f2.gif"
 
 daybydayUp=new Image(157,20)
 daybydayUp.src="Images/daybyday.gif"
 daybydayDown=new Image(157,20) 
 daybydayDown.src="Images/daybyday_f2.gif"
 
 day1Up=new Image(157,20)
 day1Up.src="Images/day1.gif"
 day1Down=new Image(157,20) 
 day1Down.src="Images/day1_f2.gif"