function popup(url, width, height) {
	width = width || '80%';
	height = height || '70%';

	if (typeof width == 'string' && width.length > 1 && width.substr( width.length - 1, 1 ) == '%')
		width = parseInt( window.screen.width * parseInt( width, 10 ) / 100, 10 );

	if (typeof height == 'string' && height.length > 1 && height.substr( height.length - 1, 1 ) == '%')
		height = parseInt( window.screen.height * parseInt( height, 10 ) / 100, 10 );

	if ( width < 640 ) width = 640;
	if ( height < 420 ) height = 420;

	var top = parseInt( ( window.screen.height - height ) / 2, 10 ),
		left = parseInt( ( window.screen.width  - width ) / 2, 10 ),
		options = 'location=no,menubar=no,toolbar=no,dependent=yes,minimizable=no,modal=yes,alwaysRaised=yes,resizable=yes' +
		',width='  + width +
		',height=' + height +
		',top='  + top +
		',left=' + left;

	var popupWindow = window.open( '', null, options, true );

	// Blocked by a popup blocker.
	if ( !popupWindow ) return false;

	try {
		popupWindow.moveTo( left, top );
		popupWindow.resizeTo( width, height );
		popupWindow.focus();
		popupWindow.location.href = url;
	}
	catch (e) {
		popupWindow = window.open( url, null, options, true );
	}

	return true ;
}

function adjustFlashContainer() {
	var newHeight = Math.ceil((document.getElementById("flashcontainer").offsetWidth*218/888)) + "px";
	document.getElementById("flashcontainer").style.height = newHeight;
	//IE restituisce errore se imposto la dimensione dell'oggetto flash.
	//document.getElementById("FlashOBJ").style.width = 
	try {
		document.getElementById("FlashID").style.width = document.getElementById("flashcontainer").offsetWidth+"px";
	}
	catch(err) {}
}