I have deployed my application in websphere,problem is that when i open an appliaction in browser it logins.
But when i opened particular model in the application and doing task ,if i press control+n from keyboard thn again application opens.

It means that in the same browser application opens twice,it should not happen so it should expire the first opened application and do the process with second time opened i.e with cntl+n.

I tried deleting the cookies but it didnt worked...So i request to provide solution for this as soon as possible