function isEnter(e) {
  if (document.all) {
    chr = e.keyCode;
  }
  else {
    chr = e.which;
  }
  if (chr == 13) {
    return true;
  }
  return false;
}


// Grid

function gridSetClassName(gridID, rowID, arr) {
  if (arr[rowID]) {
    $(gridID + rowID).className = "row_selected";
  }
  else {
    $(gridID +rowID).className = "";
  }
}

function gridSetValue(gridID, arr) {
  str = "";
  bt = "";
  for (i in arr) {
    if (arr[i] == true) {
      str += bt + i;
      bt = ",";
    }
  }
  $(gridID).value = str;
}

function gridSelectCell(gridID, rowID, arr) {
  arr[rowID] = !arr[rowID];
  gridSetClassName(gridID, rowID, arr);
  gridSetValue(gridID, arr);
}