function checkLinks() {
	var links = $('body').getElementsByTagName('a');
	for (var i=0; i<links.length; i++){
	   if($(links[i]).hasClassName('external')){
		 $(links[i]).onclick = function () {
		   return openExternal(this.href);
		 }
	   }
	}
}

function openExternal(link){
	window.open(link);
	return false;
}

// Copyright 2006-2007 javascript-array.com

var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;

// open hidden layer
function mopen(id)
{	

	// cancel close timer
	mcancelclosetime();

	// close old layer
	if(ddmenuitem) ddmenuitem.style.display = 'none';

	// get new layer and show it
	ddmenuitem = document.getElementById(id);

	ddmenuitem.style.display = 'block';
	ddmenuitem.style.opacity = 1;
	//new Effect.Appear($(ddmenuitem),{delay: 0.5, duration: 0.1})
}
// close showed menu
function mclose()
{
	if(ddmenuitem){
	//ddmenuitem.style.display = 'none';
	new Effect.Fade ($(ddmenuitem), {duration: 0.2});
	}
}

// go close timer
function mclosetime()
{
	closetimer = window.setTimeout(mclose, timeout);
}

// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

// close layer when click-out
document.onclick = mclose;