<!--hide the code yadda yadda questions? ask Doug
//Must declare images in the following format:
//	var da_image = new Image();
//	da_image.src = "graphics/da_im.gif";
//	var da_image_on = new Image();
//	da_image_on.src = "graphics/da_im_on.gif";
//and thus they are preloaded, and set up for this script.
//P.S. don't forget to name your image the same as your javascript
//such as <img src="whatever.jpg" name="da_image">
if (document.images){
	function off (image_name) {
		if (document.images){
			document.images[image_name].src = eval(image_name).src;
		}
	}
}
//and keep in hidden-->