function OpenSimpleBooking(Lang, Type, OptionalGuid)
{
	var Guid = 'B467CA7D-24E0-49DA-BE97-458D859ECBE2';
	if(OptionalGuid != null) { Guid = OptionalGuid; }
	if(Guid != null && Guid != '')
	{
		var Url = 'https://www.simplebooking.it/pagebooking.aspx';
		Url += '?GUID=' + Guid;
		Url += '&LANG=' + ((Lang != null && Lang != '') ? Lang : 'EN');
		if(Type != null) { Url += '&DO=' + Type; }
		document.location.href = Url;
	}
	else { alert('Please specify a valid GUID.'); }
}