try {
var nav = window.Event ? true : false;
if (nav) {
   window.captureEvents(Event.KEYDOWN);
   window.onkeydown = NetscapeEventHandler_KeyDown;
} else {
   document.onkeydown = MicrosoftEventHandler_KeyDown;
}

function NetscapeEventHandler_KeyDown(e) {
  if (e.which == 13 && e.target.type != 'textarea' && e.target.type != 'submit') { e.which == 9; }
  return true;
 }

function MicrosoftEventHandler_KeyDown() {
  if (event.keyCode == 13 && event.srcElement.type != 'textarea' && event.srcElement.type != 'submit') {
          event.keyCode = 9; 
    } else {
  return true;}
}
} catch(er) {}