function preload_image(_image) {
	var image = new Image;
	image.src = _image;
}

function change_image(region) {
	var ShowItem = document.getElementById("area_image");
	var LinkItem = document.getElementById("county_" + region);
	ShowItem.style.backgroundImage = 'url(/images/region/' + region + '.gif)';
	return true;
}

function hide_image(region) {
	var ShowItem = document.getElementById("area_image");
	var LinkItem = document.getElementById("county_" + region);
	ShowItem.style.backgroundImage = 'url(/images/pixel.gif)';
	return true;
}