ASHOK,
As I explained earlier, despite the changes you make to your application, you might have caching problems. I can't explain why the browser doesn't get the newer version of the file.
One way of forcing many browser to re-request the page from the server is to hold SHIFT while clicked the refresh button. This will re-request the page from the server, but that doesn't mean that upstream caching (ISP proxy, etc) isn't affecting you.
-
Peter