9. The method as recited in claim 1 , further comprising: an act of receiving a second Web page request for a second Web page from a second Web browser, the second Web page request indicating a user-interface culture of the second Web browser, the user-interface culture including at least a language used by the second Web browser; an act of accessing a second server-side page that corresponds to the second Web page; an act of executing a second script manager that is included in the second server-side page; an act of the second script manager accessing a generic client-side script reference included in the second server-side page, the generic client-side script reference referring to a second client-side script that is to be executed at the second Web browser; an act of the second script manager using the generic client-side script reference and the user-interface culture of the second Web browser to identify an appropriate client-side script reference to return to the second Web browser, the appropriate client-side script reference referring to a culturally localized instance of the referenced script; an act of returning the appropriate client-side script reference to the second Web browser; an act of receiving the appropriate client-side script reference from the second Web browser in response to the second Web browser rendering the second Web page, reception of the appropriate client-side script reference being a request for the culturally localized instance of the second client-side script; and an act of returning the culturally localized instance of the second client-side script to the second Web browser such that execution of the second Web page at the second Web browser can be localized in accordance with the localizations contained in culturally localized instance of the second client-side script.
9. The method as recited in claim 1 , further comprising: an act of receiving a second Web page request for a second Web page from a second Web browser, the second Web page request indicating a user-interface culture of the second Web browser, the user-interface culture including at least a language used by the second Web browser; an act of accessing a second server-side page that corresponds to the second Web page; an act of executing a second script manager that is included in the second server-side page; an act of the second script manager accessing a generic client-side script reference included in the second server-side page, the generic client-side script reference referring to a second client-side script that is to be executed at the second Web browser; an act of the second script manager using the generic client-side script reference and the user-interface culture of the second Web browser to identify an appropriate client-side script reference to return to the second Web browser, the appropriate client-side script reference referring to a culturally localized instance of the referenced script; an act of returning the appropriate client-side script reference to the second Web browser; an act of receiving the appropriate client-side script reference from the second Web browser in response to the second Web browser rendering the second Web page, reception of the appropriate client-side script reference being a request for the culturally localized instance of the second client-side script; and an act of returning the culturally localized instance of the second client-side script to the second Web browser such that execution of the second Web page at the second Web browser can be localized in accordance with the localizations contained in culturally localized instance of the second client-side script. 10. The method as recited in claim 9 , wherein the act of receiving a second Web page request for a second Web page from the second Web browser comprises an act of receiving a HyperText Transfer Protocol GET message.