i am trying doing automation using selenium......i have opened a hub by
`start java -jar selenium-server-standalone-2.40.0.jar -role hub -port 6156`
and then started a node on a fifefox browser by
`start java -jar selenium-server-standalone-2.40.0.jar -role node -hub
http://localhost:6156/grid/register -browser                                                                                                                                 "browserName=firefox,setjavascriptEnabled=true,acceptSslCerts=true,maxInstances=5,platform=WINDOWS" -port 6157`