var homeoff              = new Image();
   var homeon               = new Image();
       homeoff.src          = "images/bttn_home_off.gif"; 
       homeon.src           = "images/bttn_home_on.gif"; 

   var aboutoff             = new Image();
   var abouton              = new Image();
       aboutoff.src         = "images/bttn_about_off.gif"; 
       abouton.src          = "images/bttn_about_on.gif"; 

   var resultsoff           = new Image();
   var resultson            = new Image();
       resultsoff.src       = "images/bttn_results_off.gif"; 
       resultson.src        = "images/bttn_results_on.gif"; 

   var newslettersoff       = new Image();
   var newsletterson        = new Image();
       newslettersoff.src   = "images/bttn_newsletters_off.gif"; 
       newsletterson.src    = "images/bttn_newsletters_on.gif"; 

   var resourcesoff         = new Image();
   var resourceson          = new Image();
       resourcesoff.src     = "images/bttn_resources_off.gif"; 
       resourceson.src      = "images/bttn_resources_on.gif"; 

   var contactoff           = new Image();
   var contacton            = new Image();
       contactoff.src       = "images/bttn_contact_off.gif"; 
       contacton.src        = "images/bttn_contact_on.gif";