20. The non-transitory, tangible computer readable storage medium of claim 19 wherein, the one or more first context specific references are obtained from a first browsing context; and obtaining one or more second context specific references for each runtime value that satisfies the at least one requirement comprises, accessing an object in a second browsing context, and obtaining a portion of the object that satisfies the at least one requirement.
20. The non-transitory, tangible computer readable storage medium of claim 19 wherein, the one or more first context specific references are obtained from a first browsing context; and obtaining one or more second context specific references for each runtime value that satisfies the at least one requirement comprises, accessing an object in a second browsing context, and obtaining a portion of the object that satisfies the at least one requirement. 21. The non-transitory, tangible computer readable storage medium of claim 20 wherein, the first browsing context comprises a first web site; and the second browsing context comprises a second web site, the second web site comprising one or more different objects than the first web site.