There is no way to disable the back button reliably. Every method, short of writing your own browser, can be easily disabled. This question has been asked millions of times, for years and years. The "back" button is integral to how browsers work, and is firmly a part of the user interface and the collective "user expectation". Trying to fight it is usually a sign of poor understanding of the web, a flawed application model , and/or bad design!
Users will press the "back" button. They will be irritated if it doesn't work. They will often simply close the browser completely if your application doesn't behave as they expect.
tgreer
Made Her Cry
2,118 posts since Dec 2004
Reputation Points: 227
Solved Threads: 37
Which can be gotten back again with one click.
Make a decent application instead; save yourself work and your users hassle.
nikkiH
Junior Poster in Training
79 posts since Dec 2006
Reputation Points: 13
Solved Threads: 4
hello people it works fine with IE 6 but suks at IE 7 & IE 8.
dnanetwork
Practically a Master Poster
633 posts since May 2008
Reputation Points: 28
Solved Threads: 106
all above suggestions will not work in IE7 or Mozilla...
it works fine with IE6...
Ajax can help...
dnanetwork
Practically a Master Poster
633 posts since May 2008
Reputation Points: 28
Solved Threads: 106