img1_on = new Image;
		img1_off = new Image;
		img1_on.src = "images/runnersworld/home_on.gif";
		img1_off.src = "images/runnersworld/home.gif";
		
		img2_on = new Image;
		img2_off = new Image;
		img2_on.src = "images/runnersworld/training_on.gif";
		img2_off.src = "images/runnersworld/training.gif";
		
		img3_on = new Image;
		img3_off = new Image;
		img3_on.src = "images/runnersworld/races_places_on.gif";
		img3_off.src = "images/runnersworld/races_places.gif";
		
		img4_on = new Image;
		img4_off = new Image;
		img4_on.src = "images/runnersworld/shoes_gear_on.gif";
		img4_off.src = "images/runnersworld/shoes_gear.gif";
		
		img5_on = new Image;
		img5_off = new Image;
		img5_on.src = "images/runnersworld/injury_prevention_on.gif";
		img5_off.src = "images/runnersworld/injury_prevention.gif";
		
		img6_on = new Image;
		img6_off = new Image;
		img6_on.src = "images/runnersworld/nutrition_weightloss_on.gif";
		img6_off.src = "images/runnersworld/nutrition_weightloss.gif";
		
		
		img7_on = new Image;
		img7_off = new Image;
		img7_on.src = "images/runnersworld/motivation_on.gif";
		img7_off.src = "images/runnersworld/motivation.gif";
	
		
		
		img10_on = new Image;
		img10_off = new Image;
		img10_on.src = "images/runnersworld/discussions_on.gif";
		img10_off.src = "images/runnersworld/discussions.gif";
		
		img11_on = new Image;
		img11_off = new Image;
		img11_on.src = "images/runnersworld/shop_on.gif";
		img11_off.src = "images/runnersworld/shop.gif";
		
		img12_on = new Image;
		img12_off = new Image;
		img12_on.src = "images/runnersworld/personal_trainer_on.gif";
		img12_off.src = "images/runnersworld/personal_trainer.gif";
		
		img13_on = new Image;
		img13_off = new Image;
		img13_on.src = "images/runnersworld/subscribe_on.gif";
		img13_off.src = "images/runnersworld/subscribe.gif";
		
		img14_on = new Image;
		img14_off = new Image;
		img14_on.src = "images/runnersworld/free_newsletters_on.gif";
		img14_off.src = "images/runnersworld/free_newsletters.gif";
		
		img15_on = new Image;
		img15_off = new Image;
		img15_on.src = "images/runnersworld/race_dir_login_on.gif";
		img15_off.src = "images/runnersworld/race_dir_login.gif";
		 
		img_sky_1 =	new Image;
		img_sky_2 =	new Image;
		img_sky_3 =	new Image;
		img_sky_4 =	new Image;
		img_sky_5 =	new Image; 
		/*
		img_sky_1.src =	"images/runnersworld/dawn.jpg";
		img_sky_2.src =	"images/runnersworld/morning.jpg";
		img_sky_3.src =	"images/runnersworld/day_2.jpg";
		img_sky_4.src =	"images/runnersworld/dusk.jpg";
		img_sky_5.src =	"images/runnersworld/night.jpg";
		*/
		function swapImg(imgField,newImg)	{
			document[imgField].src = eval(newImg+".src")
		}