pop_list = [];

function pop_image(ptr, image, id) {
	if(pop_list[id])
		return;

	ptr.src = image;
}

function pop_menu(ptr, id) {
	obj = document.getElementById(id);

	if(obj.style.display == '') {
		pop_list[id] = false;
		obj.style.display = 'none';
	} else {
		pop_list[id] = true;
		obj.style.display = '';
	}
}