Disabling back button is not working in firefox

[kashhere]

Hi all

i am working on a site
in which user need to be in same page
when the user clicks on back button

Its working in IE, Chrome but not in firefox
in firefox when i click on the back button though i have embedded the script
its not working
can anyone please let me know the solution

here i am forwarding the script function for back button functionality
which i have called using body onload


JAVA SCRIPT FUNCTION :-
-----------------------------------------

function DisablingBackFunctionality()
{
var URL;
var i ;
var QryStrValue;
URL=window.location.href ;
i=URL.indexOf("?");
QryStrValue=URL.substring(i+1);
if (QryStrValue!='X')
{
window.location=URL + "?X";
}
}

Thanks in advance
waiting for your valuable reply

[acoder]

The first question to ask yourself is why you're trying to disable the back button. Rarely is it a good idea. Is it to prevent logged out users from seeing cached content, or to prevent loss of data in a web application, or what?

[kashhere]

The first question to ask yourself is why you're trying to disable the back button. Rarely is it a good idea. Is it to prevent logged out users from seeing cached content, or to prevent loss of data in a web application, or what?

Actually i dont want to show the users the previous page
after logged out
show i need to disable the back button
could u please guide me towards the solution

[acoder]

In that case, prevent caching on the previous page, so when someone is logged out and goes back, they see the login page instead of the page they were at.

[kashhere]

I have tried

with

window.history.forward(-1);

bt its working in firefox fine
but its not working perfectly in Chrome.

[acoder]

That's a bit of a hack. What if someone has JavaScript disabled?

Disable caching in your server-side script/code.

[kashhere]

thanks fr ur replies

[acoder]

You're welcome. So did you get it working?