code to prevent exit pop-up on internal links

The exit pop-up script I have is working fine, other than the fact that it engages on any internal links as well.

I know that there is either a code that can be applied universally, or a code I can put in every link that will prevent this from happening.

Not sure that it matters, but I've included the exit script below. Any help on which code to use and where to place it in my page would be a big help.

Thanks

<script type="text/javascript">
var internal = 0;
function bunload() {
if (internal != 1) {
  window.onbeforeunload = null;
  alert("******************************************************\n WAIT!  WAIT!  WAIT!  WAIT!  WAIT!  WAIT!!  WAIT!!\n******************************************************\n\nMy partner will probably KICK MY ASS for this...\n\nI am secretly giving away a LIMITED number of $20\ncoupons just for Tweeting about us.\n\nIf you act right now, you can grab our Manuscript\nplus ALL Bonuses for just $27!\n\nJust click *CANCEL* on the next window to get your\nV.I.P. discount link!\n\n******************************************************");
  window.location = "gift page";
  return "******************************************************\n  Click CANCEL  -  Click CANCEL  -  Click CANCEL  \n******************************************************\n\n  Click *CANCEL* Now to get your V.I.P. discount!\n\n"; }
else {
  internal = 0;
       }
}
if (internal != 1) {
   window.onbeforeunload = bunload;
}
   else {
   internal = 0;
}
</script>

Code (markup):

 

These popups make we want to shoot myself.

 

me too, but they convert well enough to still use them