var timeout	= 250;
var timer	= 0;
var menuIndex	= 0;

//==============================================================================

function xxxmenu_show(id)
{	
  xxxtimer_close();

  if ( 0 != menuIndex ) menuIndex.style.visibility = 'hidden';

  menuIndex = document.getElementById(id);
  
  menuIndex.style.visibility = 'visible';
}

//==============================================================================

function xxxmenu_hide()
{
  if ( 0 != menuIndex ) menuIndex.style.visibility = 'hidden';
}

//==============================================================================

function xxxtimer_set()
{
  timer = window.setTimeout(xxxmenu_hide,timeout);
}

//==============================================================================

function xxxtimer_close()
{
  if ( 0 != timer )
  {
    window.clearTimeout(timer);
    
    timer = null;
  }
}

document.onclick = xxxmenu_hide;