// JavaScript Document
  // script from www.sharepointblogs.com/dustin/archive/2006/02/03/5027.aspx
  var theLinks = document.links;
  var thisDomain = window.location.hostname;

  // Edit "theMessage" to your liking
  var theMessage = "You are now leaving " + thisDomain + ". The requested web page will open in a new window. Click \"Cancel\" to stop loading the requested page. You may need to hold your CTRL key down while pressing \"OK\" to bypass your pop-up blocking software.";

  var showMessage = 0;

  function updateLinks() {
    for (i=0; i < theLinks.length; i++ ) {
      var thisLink = theLinks[i];
      if (thisLink.href.indexOf(thisDomain) == -1 && thisLink.href.indexOf("javascript") == -1) {
        thisLink.target = "_blank";
        if (showMessage == 1) {
        thisLink.onClick = confirmNav;
          }
        }
      }
    }

function confirmNav() {
  return confirm(theMessage);
  }

document.body.onload = updateLinks;