function try_submit(e, username, password, func)
{
	if (e.keyCode == 13)
	{
		if (func == 'reg')
		{
			submit_reg(username, password);
		}
		else
		{
			submit_login(username, password);
		}
	}
}
function submit_reg(uname, pass)
{
	document.getElementById('reg_msg').innerHTML	=	'Trying to register....';
	
	req	=	xmlhttp_start();
	req.open('POST', 'user_reg.php', true);
	req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	req.send('username='+uname.value+'&password='+pass.value);
	
	req.onreadystatechange	=	function ()
	{
		if (req.readyState == 4)
		{
			if (req.status == 200)
			{
				document.getElementById('reg_msg').innerHTML	=	req.responseText;
			}
			else
			{
				alert('Hay un error cargando el dato');
			}
		}
	}
}
function user_logout()
{
	req	=	xmlhttp_start();
	req.open('GET', 'user_logout.php', true);
	req.send(null);
	
	req.onreadystatechange	=	function ()
	{
		if (req.readyState == 4)
		{
			if (req.status == 200)
			{
				document.location.reload();
			}
			else
			{
				alert('Hay un error cargando el dato');
			}
		}
	}
}
function submit_login(uname, pass)
{
	document.getElementById('log_msg').innerHTML	=	'Trying to login....<br />';
	
	req	=	xmlhttp_start();
	req.open('POST', 'user_login.php', true);
	req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	req.send('username='+uname.value+'&password='+pass.value);
	
	req.onreadystatechange	=	function ()
	{
		if (req.readyState == 4)
		{
			if (req.status == 200)
			{
				if (req.responseText == 1)
				{
					document.location.reload();
				}
				else
				{
					document.getElementById('log_msg').innerHTML = req.responseText+'<br />';
				}
			}
			else
			{
				alert('Hay un error cargando el dato');
			}
		}
	}
}