$(function() {
	$(".map_tip").mouseover(
		function(){
			var target_id = $(this).attr("id");
			target_id = target_id.replace("tip_", "map_");
			$("#" + target_id + ":hidden").fadeIn("fast");
		}
	);
	$(".map_tip").mouseout(
		function(){
			var target_id = $(this).attr("id");
			target_id = target_id.replace("tip_", "map_");
			$("#" + target_id + ":visible").fadeOut("fast");
		}
	);
});