var Header = {
	addFade : function(selector){
		$("").css("display", "none").prependTo($(selector));
		$(selector+" area").bind("mouseenter",function(){
			$(selector+" .hover").show();
		});
		$(selector+" area").bind("mouseleave",function(){
			$(selector+" .hover").hide();
		});
	}
};

$(function(){
	Header.addFade(".world_nordamerika");
	Header.addFade(".world_china");
	Header.addFade(".world_rest");
});