function addLoadEvent(func) {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
	window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
			}
		}
	}

addLoadEvent(field_focus);

/* addLoadEvent(load_checkKey);

function checkKey(e) {
  var key;
  if (window.event) {
    key = window.event.keyCode;
  } else {
    key = e.keyCode; 
  }

  if (key == 13) {
    document.forms[0].submit();
  }
}

function load_checkKey() {
  document.forms[0].elements["code"].onkeydown = checkKey;
}
*/


function field_focus() {
  document.forms[0].elements["code"].focus();
}