function mail()
{  
    advAJAX.assign(document.getElementById("mail_form"), 
    {
    	onLoading : function(obj)
        {
        	document.getElementById("sending").style.display = "block";
			document.getElementById("komunikat").style.display = "none";
			document.getElementById("error").style.display = "none";
        },
        
        onComplete : function(obj) 
    	{ 
    		document.getElementById("sending").style.display = "none";
			document.getElementById("komunikat").style.display = "none";
			document.getElementById("error").style.display = "none";
    	},
        
    	onSuccess : function(obj) 
    	{
    		document.getElementById("komunikat").style.display = "block";
        }
        
     });
}

function valid_kontakt(){
if (document.getElementById("imie_nazwisko").value ==""){document.getElementById("error").style.display = "block"; return false}
if (document.getElementById("telefon").value ==""){document.getElementById("error").style.display = "block"; return false}
if (document.getElementById("woj").value ==""){document.getElementById("error").style.display = "block"; return false}
if (document.getElementById("miejscowosc").value ==""){document.getElementById("error").style.display = "block"; return false}
};