code: public void setOnKeyUp(String onkeyup)
      {
          AbstractHtmlState tsh = getState();
          tsh.registerAttribute(AbstractHtmlState.ATTR_JAVASCRIPT, ONKEYUP, onkeyup);
      }
docs: Sets the onKeyUp javascript event.
  @param onkeyup the onKeyUp event.
  @jsptagref.attributedescription The onKeyUp JavaScript event.
  @jsptagref.databindable false
  @jsptagref.attributesyntaxvalue <i>string_onKeyUp</i>
  @netui:attribute required="false" rtexprvalue="true"
  description="The onKeyUp JavaScript event."