house_home = new Image(); 
house_home.src = "http://nadiaplesner.com/page/images/house_home.jpg";

house_white = new Image(); 
house_white.src = "http://nadiaplesner.com/page/images/house_white.jpg";

house_contact = new Image(); 
house_contact.src = "http://nadiaplesner.com/page/images/house_contact.jpg";