Enter the Google AJAX Library API
Setting it all up
Setting it up couldn’t be simpler:
// Load jQuery
Yes that really is it! For the performance connoisseurs out there, you can choose to add this at the end of your page so the scripts load last (provided nothing is required in the page load).
Plus you can add as many libraries as you like using google.Load (go for it load the whole lot!)
For more information see the complete API documentation at google:
Google AJAX Libraries API