managedon= new Image();
managedon.src= 'img/merc_man_nav_on.gif';
managedoff= new Image();
managedoff.src= 'img/merc_man_nav_off.gif';

whyon= new Image();
whyon.src= 'img/why_managed_nav_on.gif';
whyoff= new Image();
whyoff.src= 'img/why_managed_nav_off.gif';

priceon= new Image();
priceon.src= 'img/managed_pricing_nav_on.gif';
priceoff= new Image();
priceoff.src= 'img/managed_pricing_nav_off.gif';

customon= new Image();
customon.src= 'img/custom_nav_on.gif';
customoff= new Image();
customoff.src= 'img/custom_nav_off.gif';