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