function go(formName, command, attr1, attr2) {
  if ((command != 'addAttr' || attr1 != ' ') && (command != 'swap' || attr2 != '')) {
    if (document.forms[formName].searchString != null ){
      document.forms[formName].searchString.value = "";
    }
    document.forms[formName].command.value = command;
    document.forms[formName].attr1.value = attr1;
    document.forms[formName].attr2.value = attr2;
    document.forms[formName].submit();
  }
}