function showhide(id) {
if (document.getElementById){
obj = document.getElementById(id);
if (obj.style.display == "none"){
obj.style.display = "";
}
}
}

function geo_district(sel) {

var id = document.forms["register"].elements["reg_id"].value;

	showhide('powiat');

    advAJAX.get({
        url: "/modules/geoajax/geo_district.php",
        parameters: {
            "id": id
        },
        onSuccess: function(obj){
			var valobj = document.getElementById("dis_id");
			valobj.innerHTML = '';
			eval(obj.responseText);
        },
        onError: function(obj){
            alert("Error: " + obj.status);
        }
    });
};

function geo_comm(sel) {

	var id = document.forms["register"].elements["dis_id"].value;

	showhide('miasto');

    advAJAX.get({
        url: "/modules/geoajax/geo_comm.php",
        parameters: {
            "id": id
        },
        onSuccess: function(obj){
			var valobj = document.getElementById("com_id");
			valobj.innerHTML = '';
			eval(obj.responseText);
        },
        onError: function(obj){
            alert("Error: " + obj.status);
        }
    });
};

function checkform(form)
{
    // ** START **
	
	if (form.username.value == "" || form.username.value == 0) {
        alert("Podaj nazwę użytkownika");
        form.username.focus();
        return false ;
    }
	
	if (form.email.value == "" || form.email.value == 0) {
        alert("Podaj email");
        form.email.focus();
        return false ;
    }
	
	if (form.email_confirm.value == "" || form.email_confirm.value == 0) {
        alert("Powtórz email");
        form.email_confirm.focus();
        return false ;
    }
	
	if (form.new_password.value == "" || form.new_password.value == 0) {
        alert("Podaj hasło");
        form.new_password.focus();
        return false ;
    }
	
	if (form.password_confirm.value == "" || form.password_confirm.value == 0) {
        alert("Powtórz hasło");
        form.password_confirm.focus();
        return false ;
    }
    
    if (form.reg_id.value == "" || form.reg_id.value == 0) {
        alert("Wybierz region");
        form.reg_id.focus();
        return false ;
    }
    
    if (form.dis_id.value == "" || form.dis_id.value == 0) {
        alert("Wybierz powiat");
        form.dis_id.focus();
        return false ;
    }
	
	if (form.com_id.value == "" || form.com_id.value == 0) {
        alert("Wybierz miasto");
        form.com_id.focus();
        return false ;
    }

    // ** END **
    return true;
};

function geo_filtr(sel) {

var id = document.forms["formularz"].elements["reg_id"].value;
		
    advAJAX.get({
        url: "/modules/geoajax/geo_filtr.php",
        parameters: {
            "id": id
        },
        onSuccess: function(obj){
			var valobj = document.getElementById("fromBox");
			valobj.innerHTML = '';
			eval(obj.responseText);
        },
        onError: function(obj){
            alert("Error: " + obj.status);
        }
    });
};