// PRELOAD IMAGES
var bullet_blue = new Image();
bullet_blue.src = 'resources/bullet_square_blue.gif';
var bullet_red = new Image();
bullet_red.src = 'resources/bullet_square_red.gif';

function toggleImage(img,state) {
	if (document.images) {
		if (state == 'on') document.images[img].src = bullet_red.src;
		else document.images[img].src = bullet_blue.src;
	}
}