flg_show = 0;

function SetAllHidden() {
  document.getElementById('sub_online').style.visibility = "hidden";
  document.getElementById('sub_economy').style.visibility = "hidden";
  document.getElementById('sub_music').style.visibility = "hidden";
  document.getElementById('sub_people').style.visibility = "hidden";
  document.getElementById('sub_heart').style.visibility = "hidden";
}	

function SetDivVisible( Name ) {
  document.getElementById('sub_online').style.visibility = "hidden";
  document.getElementById('sub_economy').style.visibility = "hidden";
  document.getElementById('sub_music').style.visibility = "hidden";
  document.getElementById('sub_people').style.visibility = "hidden";
  document.getElementById('sub_heart').style.visibility = "hidden";
  var target = document.getElementById(Name);
  if( target != null )
    target.style.visibility = "visible";
}

function CheckDiv() {
	if( flg_show == 0 ) SetAllHidden();
	setTimeout("CheckDiv()", 3000);
}