Disable Refresh and back facilty in a jsp page

hi,
I have a jsp page which makes entries in a db. to stop is doing it again (by refreshing the page) refresh facility is to be diabled. I do not want to use cookies or session . Can any one tell me how to disable refresh and back button in a html/jsp page
Atishay

i am bit new with jsp and i do not know how to use synchronization token
howeever i think if we have a hidden input with value=0 and later make it one when entry is made in the db by the jsp page. But the problem is that i do not know how to check the value. Because each time we refresh the page the value of the variable will be initialized so a check can not be made.
Also following will help
<META HTTP-EQUIV="Expires" CONTENT="Fri, 1 Jun 2001 00:01:00 GMT">
but how to take the time of the host machine which will run the jsp page.
Thanks
Atishay

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---------- java ----------
select MTName,Date,MTLineCount from linecountdetails where mtname='prasu' and Date >='Thu Dec 01 00:00:00 GMT+05:30 2005' and Date <='Sat Dec 31 00:00:00 GMT+05:30 2005'
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null
null
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