function preloadImages(imgs){
	
	var picArr = [];
	
		for (i = 0; i<imgs.length; i++){
			
				picArr[i]= new Image(100,100); 
				picArr[i].src=imgs[i]; 

			
			}
	
	}
	
preloadImages([
		'images/footer_list_img1a.png', 
		'images/menu_img1_act.png', 
		'images/menu_img2_act.png', 
		'images/menu_img3_act.png', 
		'images/menu_img4_act.png', 
		'images/menu_img5_act.png'
		]);