customizing jquery accordian

 want to make accordian   using jquery with two part , 1st  part used for login of user , if the user successfully login then second will automatically opens and user can see his information / personal details in it .. other wise if user enter worng password or username in fisrt part of accordian error get display in first  part ..

i  had implement the accordian  with jquery ,  but not able to open validate the login part .. 

so help with some idea..