Sys.ArgumentException
Raised by the Microsoft Ajax Library framework when a function or method is invoked and at least one of the passed arguments is invalid.
Remarks
When a client function or method is invoked and at least one of the passed arguments does not meet the parameter specification of the called function or method, a Sys.ArgumentException object is created by using the Error.argument function.
For more information about how to raise this error, see Error.argument Function.
For more information about how to handle error conditions, see Debugging and Tracing Ajax Applications Overview.