var winCityCode='';

function showCityCode(url)
{
	if (winCityCode)
	{
		if (!winCityCode.closed)
			winCityCode.close();
	}
	
	winCityCode = window.open(url, "_citycode");
	if (!winCityCode.opener) winCityCode.opener = self;
	
	if (window.focus) 
		winCityCode.focus();
		
	return (false);
}