<script language="javascript">
  function editOrder(id, order_pro) {
  	var obj = document.getElementById("block_" + id);

  	obj.innerHTML = "<input id='text_"+ id +"' type='text' size='4' value='" + order_pro + "'  onkeypress='eventEnter(" + id + ", event, this);  return false;' />";

  	document.getElementById("text_" + id).focus();
  }
  
   function eventEnter(id, event, formElem) {
  	var objblock = document.getElementById("block_" + id);
  	var objtext = document.getElementById("text_" + id);
  	
  	if(event.keyCode == 0xD) {
  	 objblock.innerHTML = objtext.value;
  	}
  } 
 </script>