var win = null;

function popup(url, width, height) {
  if (win && !win.closed)
    win.close();
  win = window.open( url, "", "menubar=no,resizable=yes,scrollbars=yes,status=no,location=no,width=" + width + ",height=" + height );
}

function openPDFWin(url) {
  window.open(url, '', 'resizable');
}

document.observe("dom:loaded", function() {
  $$("a.pdflink").each(function(el) {
    el.onclick = function() { openPDFWin(el.href); return false };
  });
  $$("a").each(function(el) {
    if(el.href.match(/\pdf/)) {
      el.onclick = function() { openPDFWin(el.href); return false };
    }
  });

})