function add_bookmark() 
{
	var bookmarkURL = 'http://www.boingshopping.it/';
	var bookmarkTitle = 'Boing Shopping - negozi online e offerte';
	var bookmarkNetscape = 'Premi CTRL + D per aggiungere il sito nei tuoi preferiti.';
	
	if (window.sidebar) // Firefox   
	{
		alert(bookmarkNetscape.replace(/\{0\}/, "CTRL + D"));
	}
	// Opera
	else if (window.opera && window.print)
	{
		alert(bookmarkNetscape.replace(/\{0\}/, "CTRL + T"));
	}

	// IE Mac
	else if (document.all && (navigator.userAgent.indexOf('Win') < 0))
	{
		alert(bookmarkNetscape.replace(/\{0\}/, "COMMAND + B"));
	}

	// Netscape / Mozilla
	// IE Windows
	else (window.external)
	{
		window.external.AddFavorite(bookmarkURL, bookmarkTitle);
	}

}