There are 2 ways which will depend on your exact requirement.
1. Use event.preventDefault() which will cancel your event to execute.
2. If you want to make it select once then take boolean variable in itemclick and make it true on 1 item click and check in itemclick if boolean is false allow and continue what you wan to do in that event else not.
Hope it will help you!!!
Hey thanks for your reply..!
Am already using th boolean variable to do this .. but its not working properly in some situations.. can u give me a suggestion on using event.preventDefault(). i mean when can i say this,,,, ?