What i want is, when a user leaves or clicks back button there should be a prompt which asks him if he wants to visit another site. If he clicks yes then the page should be redirected. If clicks no then the browser closes or goes to back whatever the visitor has clicked. (x or back button)

But it should not happen when user submits the form or visits internal link.

please don't suggest me not to do this, i dont care if its irritating as its for my client so its my humble request to all the js pros to help me asap.

You can't

the only event (onbeforeunload) you could use, will trigger on EVERY action that will change the current location of the window, even to a page on the same site.

<script language="JavaScript">
  window.onbeforeunload = confirmExit;
  function confirmExit()
  {
    return "You are about to leave this page.  If any changes you made may be lost.  Are you sure you want to exit this page?";
  }
</script>

Wow! I’ve never heard of this before and I think they’re awesome!

This is just some of the codes you can use to make prompts.if you are just not well equipped i recommend get a tutorial it would be better.


<script language="JavaScript">
window.onbeforeunload = confirmExit;
function confirmExit()
{
return "You are about to leave this page. If any changes you made may be lost. Are you sure you want to exit this page?";
}
</script>

if you don't want this to happen on a button click or clicking a link you should be able to add the following:

onclick="window.onbeforeunload= function(){};"

This should overwrite the onbeforeunload event before the onbeforeunload event gets fired.

Hope this works, haven't tested it.