function display_region(item) {
	var show_class = item.id.replace("_p", "");
	need_div = document.getElementById(show_class);
	desc_div = document.getElementById(show_class + "_d");
	if (show_class) need_div.style.display = "block";
	if (show_class) desc_div.style.display = "block";
	
};

function clean_region(item) {
	var show_class = item.id.replace("_p", "");
	need_div = document.getElementById(show_class);
	desc_div = document.getElementById(show_class + "_d");
	if (show_class) need_div.style.display = "none";
	if (show_class) desc_div.style.display = "none";
}