12. The computer readable medium of claim 8 , further comprising instructions that, when executed by a processor, cause the processor to perform receiving a request from a software module to inspect the child frame, wherein the software module applies the modification to the child frame in response to the inspection of the child frame.
12. The computer readable medium of claim 8 , further comprising instructions that, when executed by a processor, cause the processor to perform receiving a request from a software module to inspect the child frame, wherein the software module applies the modification to the child frame in response to the inspection of the child frame. 13. The computer readable medium of claim 12 , wherein the inspection of the child frame comprises analyzing one or more characteristics associated with the first expression.