(function($){
  	$.fn.zipcodeLookup = function(options) {
		var options = $.extend($.fn.zipcodeLookup.defaults, options);

		return this.each(function() {
			$this = $(this);
			zipInput = $('.'+options.zipInput)[0];
			zipInput.keyup(function(){
				if((zipInput.value != '' || zipInput.value != null) && zipInput.value.length == 5 {
					try {
						var path = options.yahooAPIBase+options.yahooAPIAppId+'&zip='+zipInput.value;
						$.ajax({
							type: 'GET',
							url: options.proxyURL+'?yws_path='+encodeURIComponent(path),
							success: function(data){
								$('Result',data).each(function(i){
									zip = data.find('Zip').text();
									if(zip == null || zip == ''){
										alert('Please check your zip code.');
										exit();
									} else {
										if(stateValue = $('.'+options.stateInput)[0]) stateValue.value = data.find('State').text();
										if(cityValue = $('.'+options.cityInput)[0]) cityValue.value = data.find('City').text();
									}
								});
							},
							dataType: 'xml'
						});
					} catch(e) {}
				}
			}).change();
		});
	};
	$.fn.zipcodeLookup.defaults = {
		zipInput: 'zipInput',
		stateInput: 'cityInput',
		cityInput: 'stateInput',
		yahooAPIBase: 'MapsService/V1/geocode?appid=',
		yahooAPIAppId: '',
		proxyURL: 'request.php',
		zipError: 'Please check your zip code.'
	};
})(jQuery);



// call to this plugin using:

$(document).ready(function() {
	$('#testForm').zipcodeLookup({
		yahooAPIAppId:'0Ro_9_vV34H4Kqvj3XPt3IABw4PnzKJWMAEkL2nwe2WsBPbyvxBCVnzC0k0na7Pd'
	});
});