Patent Number: 
Section: claims

1. A computer system for load testing, the computer system comprising:a first computer connected to a network;a computer program, embedded in a non-transitory computer-readable medium, executed by the first computer, the computer program comprising instructions for:assessing web instances running on one or more web browsers running on the first computer; andlisting some or all of the assessed web instances for selection by a user of the computer system,wherein said instructions for assessing web instances running on one or more web browsers comprises instructions for:connecting to a web browser shell interface of a web browser running on the first computer;listing shell instances running on the web browser shell interface;determining if each of the shell instances support a COM interface; andlisting the shell instances that support the COM interface. 2. A computer system for load testing, the computer system comprising:a first computer connected to a network;a computer program, embedded in a non-transitory computer-readable medium, executed by the first computer, the computer program comprising instructions for:automatically cataloguing web instances currently running on one or more web browsers running on the first computer;listing some or all of the catalogued web instances for selection by a user of the computer system;allowing a user to select one or more of the listed web instances as a test case URL;displaying parameter values of the selected test case URLs; andallowing the user to select one or more parameters whose values are to be varied within the selected test case URLs;wherein said instructions for varying the values of the selected parameters utilize syntax, wherein said syntax comprises:a symbolic character opening a varying part from a static part;a command that specifies how to vary the varying part;a plurality of arguments to the command; anda symbolic character closing the varying part. 3. The computer system of claim 2, wherein said symbolic character opening the varying part from the static part is left parentheses, and wherein said symbolic character closing the varying part is right parentheses.