// Image Swapping

function load_all() {

	img_load('about.gif');
	img_load('about-over.gif');

	img_load('contact.gif');
	img_load('contact-over.gif');

	img_load('equipment.gif');
	img_load('equipment-over.gif');

	img_load('parts.gif');
	img_load('parts-over.gif');

}

function img_load(file) {

	var img = new Image();
	img.src = 'images/main/' + file;
	
}

function img_swap(name, file) {

	if (document.images && document.images[name]) {
	
		document.images[name].src = 'images/main/' + file;
		
	}
	
}

function find_dir(num) {

	var string = '';
	
	for (i=0;i<num;i++) {
	
		string += '../';
		
	}
	
	return string;
	
}

function rotate_implement() {

	img_swap('implement', random_implement());
	
	setTimeout('rotate_implement()', 15000);
	
}

function random_implement() {

	list = new Array();
	list[0] = 'implements/1.jpeg';
	list[1] = 'implements/2.jpeg';
	list[2] = 'implements/3.jpeg';
	list[3] = 'implements/4.jpeg';
	list[4] = 'implements/5.jpeg';
	list[5] = 'implements/6.jpeg';

	return list[Math.floor(Math.random() * list.length)];
	
}