Did you know Google's JavaScript Loader API can serve up popular javascript frameworks such as jQuery, and Prototype using their content distribution network? It works like this:

<script src="http://www.google.com/jsapi" language="javascript"></script>
<script language="javascript">
google.load("prototype", "1.6");
google.load("scriptaculous", "1.8.2");
</script>

You can see a full list of supported API's here.

Their JavaScript API now gives you access to your visitor's location, it sets a variable google.loader.ClientLocation, and populates it with City, Region/State, Country, Latitude, Longitude.

Here's an example:

<script src="http://www.google.com/jsapi" language="javascript"></script>
<script language="javascript">
if (google.loader.ClientLocation != null) {
document.write("Your Location Is: " + google.loader.ClientLocation.address.city + ", " + google.loader.ClientLocation.address.region);
} else {
document.write("Your Location Was Not Detected By Google Loader");
}
</script>

The avaliable properties of the google.loader.ClientLocation object are:

• google.loader.ClientLocation.latitude
• google.loader.ClientLocation.longitude
• google.loader.ClientLocation.address.city
• google.loader.ClientLocation.address.country
• google.loader.ClientLocation.address.country_code
• google.loader.ClientLocation.address.region

If a location cannot be determined from the visitors IP address, the google.loader.ClientLocation variable will be null.