var button01_On= new Image(); button01_On.src='images/design_home_roll.png';
var button01_Off= new Image(); button01_Off.src='images/design_home.png';

var button02_On= new Image(); button02_On.src='images/design_about_roll.png';
var button02_Off= new Image(); button02_Off.src='images/design_about.png';

var button03_On= new Image(); button03_On.src='images/design_services_roll.png';
var button03_Off= new Image(); button03_Off.src='images/design_services.png';

var button04_On= new Image(); button04_On.src='images/design_gallery_roll.png';
var button04_Off= new Image(); button04_Off.src='images/design_gallery.png';

var button05_On= new Image(); button05_On.src='images/design_store_roll.png';
var button05_Off= new Image(); button05_Off.src='images/design_store.png';

var button06_On= new Image(); button06_On.src='images/design_contact_roll.png';
var button06_Off= new Image(); button06_Off.src='images/design_contact.png';