// FUNÇÕES EM JAVASCRIPT PARA LOGIN
function loginNome(login)
{
	if (login != "")
	{
		obj1 = ObjetoXMLHttp();
		obj1.open("GET", "lib/login.php?acao=retorna_nome&login=" + login,true);
		obj1.onreadystatechange=function() 
		{
			if ((obj1.readyState==1) || (obj1.readyState==2) || (obj1.readyState==3))
			{
				window.document.getElementById("conteudo").innerHTML = "Aguarde procurando usuário.";
			}
						
			if (obj1.readyState==4)
			{
				if (obj1.responseText != false)
				{
					window.document.getElementById("conteudo").innerHTML = obj1.responseText;
					obj2 = ObjetoXMLHttp();
					obj2.open("GET", "lib/login.php?acao=retorna_foto&login=" + login,true);
					obj2.onreadystatechange=function() 
					{
						if (obj2.readyState==1)
						{
							window.document.getElementById("imagem_user").src = "img/login_default.gif";						
						}
						
						if (obj2.readyState==4)
						{
							if (obj2.responseText != "")
							{
								window.document.getElementById("imagem_user").src = "upload/fotos_usuarios/" + obj2.responseText;
							}
							else
							{
								window.document.getElementById("imagem_user").src = "img/login_default.gif";
							}
						}
					}
					obj2.send(null);
					
				}
				else
				{
					window.document.getElementById("conteudo").innerHTML = "<font style='color:red'>Login inválido</font>";
					window.document.getElementById("imagem_user").src = "img/login_error.gif";
				}
				
			}
		}
		obj1.send(null);
	}
	else
	{
		window.document.getElementById("conteudo").innerHTML = "Digite seu login e senha.";
		window.document.getElementById("imagem_user").src = "img/login_default.gif";
	}


}

function loginSenha(login, senha)
{
	obj1 = ObjetoXMLHttp();
	obj1.open("GET", "lib/login.php?acao=verifica_senha&login=" + login + "&senha=" + senha,true);		
	obj1.onreadystatechange=function() 
	{
		if ((obj1.readyState==1) || (obj1.readyState==2) || (obj1.readyState==3))
		{
			window.document.getElementById("conteudo").innerHTML = "Verificando dados, aguarde.";
		}
		
		if (obj1.readyState==4) 
		{
			//alert(obj1.responseText);
			if (obj1.responseText == 1)
			{
				
				window.document.getElementById("conteudo").innerHTML = "Iniciando sistema.";
				window.location = "index.php";
			}
			else
			{
				window.document.getElementById("conteudo").innerHTML = "<font style='color:red'>Senha inválida.</font>";
			}
		}
	}
	obj1.send(null);
}

function deslogar()
{
	obj1 = ObjetoXMLHttp();
	obj1.open("GET", "lib/login.php?acao=deslogar",true);		
	obj1.onreadystatechange=function() 
	{
		if (obj1.readyState==4)
		{
			window.location = "login.htm";
		}
	}
	obj1.send(null);
	
}