// target event manager
// ----------------------------
// used by object event manager
// return list of target object
// ----------------------------------
function get_targets( target_list ) {

  var target_objs = new Array();

  if ( target_list.length > 1)
    for ( var i = 0; i < target_list.length; i++ )
      target_objs.push( get_obj_by_id(target_list[i+1]) );
  else target_objs = false;

  return target_objs;
}

// **********************************************************************************************************************************************

function init_first_event() { }

function mouse_click_event( author_obj ) { }

function mouse_over_event( author_obj ) {

  // target manager on event manager -------------------------------
  // target_objs = get_targets(mouse_over_event.arguments);

  // user extra event code - add your code here
  // ----------------------------------------------------------------
  // if ( target_objs ) {  }

  // user code 
  // -----------------------------------------
  window.document.getElementById("box_rolling").style.display = "none";
  window.document.getElementById("box_content").style.display = "block";
}


function mouse_out_event( author_obj ) { 
  
  window.document.getElementById("box_content").style.display = "none";
  window.document.getElementById("box_rolling").style.display = "block";
}




// Extend event manager by user
// **********************************************************************************************************************************************