var table_selected_index = 0;
function table_onevent(event, action) {
  if (action == "mouseover") {
    event.style.background="#cccccc";
  }
  if (action == "mouseout") {
    event.style.background="white";
  }  
  if (action == "contextmenu" || action == "click") {
    if (event.id != null || !event_id) {
      table_selected_index = event.id;
    }
  }
  return true;
}