function warn_on_leave(site) 
  {
     var msg = "\nLinks which take you out of Abbott Laboratories worldwide \n"+
     "web site are not under the control of Abbott Laboratories, \n"+
     "and Abbott Laboratories is not responsible for the contents \n"+
     "of any such site or any further links from such site. Abbott \n"+
     "Laboratories is providing these links to you only as a \n"+
     "convenience, and the inclusion of any link does not imply \n"+
     "endorsement of the linked site by Abbott Laboratories.\n\n"+
     "Do you wish to leave this site?";
     if (confirm(msg)) 
     {
        window.open(site);
     } else
     {
        return;
     }
  }