How to prevent the browser from executing the old version of js file...

Dear sirs,
I have a JSP page that includes a javascript file as given below,
<script type="text/javascript" src="../scripts/validation.js"></script>
Some times modification is needed in this included script file. After the modification, when I load the JSP page in the browser,
the old copy of the script file, which was not modified is getting executed. by the browser.
I would like to know whether any options are availabe in javascript to prevent the browser from executing the old copy that has already downloaded to the temperary interner folder(from caching)and use the modified version available with the new response...
Thank you,
Sudheesh K S

Dear sir,
Thakyou very much for your comment.
I tried this, By doing thisThe .html page of the response will be deleted. But the javascript file will not be removed. It will be remail there.
This lead me to the idea to think about javascript. I heard that some commands are there in javascript like cache ="NO" but not sure. I searched in the net but no favourable result found...
Thank you,
Sudheesh....

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