// Block enter key
//This script and many more are available free online at
//The JavaScript Source!! http://javascript.internet.com
//Created by: Andrew G. Samoilov | http://www.webcheatsheet.com
function stopRKey(evt) {
  var evt = (evt) ? evt : ((event) ? event : null);
  var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
  if ((evt.keyCode == 13) && (node.type=="text"))  {return false;}
}

document.onkeypress = stopRKey;