disable Back button of a browser?

Most of time we want to disable the " Browser Back" button due to some security reason or any

other purpose.

there are some tech. to do this .

• You can use the location replace method when changing the location.




<script language="JavaScript">
<!--
if (document.images)
location.replace('http://www.xyz.com/login.html');
else
location.href = 'login.html';
//-->
</script>


In this case "replaces the current history location with the new location."



• You can load the new location into another window, and then close the old window:


<script langauge="JavaScript">
<!--
function newWindow(Nameoffile,windowName)
{
msgWindow=window.open(fileName,windowName);
}
//-->
</script>
<a href="javascript:newWindow('welcome.html','window1')">Open Window</a>



• open in the next window:



<a href="login.aspx" target="_blank">New User Login </a>

So it will open login page in new window


• You can open a window without a toolbar and Disable backButton from Keyboard and
  
  Rightclick



<script language="JavaScript">
<!--
msgWindow=window.open('Login.aspx','windowName','toolbar=no');
//-->
</script>



• You can add code to the previous page to force the browser to go forwards again:



<script language="JavaScript">
<!--
javascript:window.history.forward(1);
//-->
</script>




There is no direct way to catch the back button event, so you have to play with javascipt to do so.

happy coding ........