function leaveSite()
{
   msg = "The site you are about to visit is maintained by a third party who is solely responsible for its contents. MedImmune provides this link as a service to website visitors. MedImmune is not responsible for the privacy policy of any third party websites. We encourage you to read the privacy policy of every website you visit. Click Cancel to return or OK to continue.";
   return confirm(msg);
}

function linkInit()
{
    var alinks = document.links;
    for (var i=0; i<alinks.length; i++)
    {
       dest = alinks[i].href.toString();
       dest = dest.toLowerCase();
       if ((dest.indexOf("http:")>-1) && (dest.indexOf("preemievoices")==-1))
       {
          alinks[i].attachEvent("onclick",leaveSite);
       }
    }
}