function check_registration()
{
	var pass = true;
	
	pass_f = field_check_text('usernam', 2);
	if(!pass_f) pass = false;

	pass_f = field_check_text('passwor', 4);
	if(!pass_f) pass = false;

	pass_f = field_check_text('password2', 4);
	if(!pass_f) pass = false;

	pass_f = field_check_text('email', 4);
	if(!pass_f) pass = false;

	if(pass == false)
		alert("Za dovršetak registracije je potrebno popuniti sva polja!");
		
	if(pass)
	{
		if(document.getElementById('password').value != document.getElementById('password2').value)
		{
			pass = false;
			alert("Zaporke se ne poklapaju!");
		}
	}
	
	if(pass)
	{
		if(document.getElementById('username_ajax_message').innerHTML != '')
		{
			pass = false;
			alert("Morate izabrati drugo korisničko ime!");
		}
	}
	
	if(pass)
	{
		var uname = document.getElementById('username').value;
		if((uname == "people") || (uname == "garages") || (uname == "galleries") || (uname == "groups") || (uname == "posts") || (uname == "forum") || (uname == "search") || (uname == "lost-password") || (uname == "register") || (uname == "login-error") || (login == "validate") || (uname == "impressum") || (uname == "contact"))
		{
			pass = false;
			alert("Morate izabrati drugo korisničko ime!");
		}
	}

	return pass;		
}

function reg_check_username()
{
	var xmlHttp = create_ajax_object();
	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{
			var msg = ajax_retrieve_messages(xmlHttp.responseText);
			
			var div = document.getElementById('username_ajax_message');
			if(msg[0] == "exist")
			{
				div.innerHTML = 'Korisničko ime je zauzeto!';
			}
			else
			{
				div.innerHTML = '';
			}
		}
	}
	
	var username = document.getElementById('username').value;
	username = latin2_convert(username);
	xmlHttp.open("GET",ajax_base_url+"index.php?action_type=ajax&action=register_check_name&username="+username,true);
	xmlHttp.send(null);
}