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im101_off.src="images/menu_hotels_off.jpg";
var im101_on=new Image();
im101_on.src="images/menu_hotels_on.jpg";

var im201_off=new Image();
im201_off.src="images/menu_drive_off.jpg";
var im201_on=new Image();
im201_on.src="images/menu_drive_on.jpg";

var im301_off=new Image();
im301_off.src="images/menu_couch_off.jpg";
var im301_on=new Image();
im301_on.src="images/menu_couch_on.jpg";

var im401_off=new Image();
im401_off.src="images/menu_homes_off.jpg";
var im401_on=new Image();
im401_on.src="images/menu_homes_on.jpg";

var im501_off=new Image();
im501_off.src="images/menu_flights_off.jpg";
var im501_on=new Image();
im501_on.src="images/menu_flights_on.jpg";

var im601_off=new Image();
im601_off.src="images/menu_about_off.jpg";
var im601_on=new Image();
im601_on.src="images/menu_about_on.jpg";

var im701_off=new Image();
im701_off.src="images/menu_cruise_off.jpg";
var im701_on=new Image();
im701_on.src="images/menu_cruise_on.jpg";