/**
* Simple confirmation alert
*/
function conferma(msg){
	if (msg == null){
		msg = "IRREVERSIBLE OPERATION! Want go on?"
	}
	var agree=confirm(msg);
	if (agree) return true;
	else return false;
}

/**
* put a loading image into an object
*/
function loadingImage( obj ){
	obj.innerHTML = "<p><img src=\"immagini/loading.gif\" alt=\"Loading...\" /><br /><strong>Loading...</strong></p>";
}