1. A method for testing multiple language versions of a browser-based application, said method comprising: a processor of a computer system receiving a host language Hypertext Transfer Protocol (HTTP) request issued by a host language browser, said host language HTTP request configured to be sent to a host server address, said host language HTTP request comprising a plurality of parameter strings in a host language; and said processor generating a target language HTTP request by replacing each host parameter string of at least one host parameter string of the plurality of parameter strings in the received HTTP request with a respective target parameter string associated with a target language that differs from the host language, said generated target language HTTP request configured to be sent to a target server address associated with and different from the host server address.