Method and apparatus to authenticate source of a scripted code

A method, apparatus, and computer usable code to grant access to a scripted code hosted at a host site wherein the host site has a window read-only property. A computer client receives a key-code. The computer client determines if key-code matches a known correct window-returning code. Based on that, the computer invokes the key-code to obtain a read-only property of the key-code and determines if the read-only property matches the known correct window read-only property. Invoking means treating the key-code as a computer instruction and executing the computer instruction. The computer may grant access based on a determination that the read-only property matches.