source: drbl_ui/flow_chart/drbl_mode.files/keys.js @ 149

function keyHandler()
{
  var e = window.event;
  var tag = e.srcElement.tagName;
  var override = !(tag == "A" || tag == "INPUT" || tag == "SELECT" || tag == "FORM" || tag == "SUBMIT");
  
  if(override && e.keyCode == 13) //13 is <enter> key
  {
    e.srcElement.click();
  }
}

document.onkeypress = keyHandler;