//zip code
function zipcode_to_city(zip){
	var zip = zip.replace(/^\s+|\s+$/g,""); //trim
	var city = '';
	
	if(zip >= 35801 && zip <= 35816){
		city = "Huntsville";	
	}
	
	if(city != ''){
		document.getElementById('city').value = city;
	}
}