var id = 'popup';
var iframe = 'popup-iframe';

function popup_open(src) {
	YAHOO.util.Dom.setStyle(id, 'opacity', 0); 
	YAHOO.util.Dom.setStyle(id, 'visibility', 'visible');
	
	document.getElementById(iframe).src = src;
	
	var anim = new YAHOO.util.Anim(id, { opacity: { to: 1 } } , 1, YAHOO.util.Easing.easeOut);
	anim.animate();
}

function popup_close() {
	var anim = new YAHOO.util.Anim(id, { opacity: { to: 0 } } , 1, YAHOO.util.Easing.easeIn);
	anim.animate();
	anim.onComplete.subscribe(function() {
		YAHOO.util.Dom.setStyle(id, 'visibility', 'hidden');
	});
}

var popup;

YAHOO.util.Event.onDOMReady(function() {
	popup = new YAHOO.util.DD('popup');
	popup.setHandleElId('popup');
});