buy_off = new Image();
	buy_off.src="images/buy_screw.jpg";
	
	buy_over = new Image();
	buy_over.src="images/buy_screw_over.jpg";
	
	
	about_off = new Image();
	about_off.src="images/about_screw.jpg";
	
	about_on = new Image();
	about_on.src="images/about_screw_on.jpg";
	
	events_off = new Image();
	events_off.src="images/events_screw.jpg";
	
	events_on = new Image();
	events_on.src="images/events_screw_on.jpg";
	
	
	hints_off = new Image();
	hints_off.src="images/hints_screw.jpg";
	
	hints_on = new Image();
	hints_on.src="images/hints_screw_on.jpg";
	
	
	glossary_off = new Image();
	glossary_off.src="images/glossary_screw.jpg";
	
	glossary_on = new Image();
	glossary_on.src="images/glossary_screw_on.jpg";
	
	
	contact_off = new Image();
	contact_off.src="images/contact_screw.jpg";
	
	contact_on = new Image();
	contact_on.src="images/contact_screw_on.jpg";
	
	home_sub = new Image();
	home_sub.src="images/home_submenu.jpg";
	
	bg = new Image();
	bg.src="images/checked_bg.gif";
	
	
	
	
	function changeImg(x,y) {
		x.src=y.src;
	}