// JavaScript Document
function efetuar_operacao(btu,valor,cell)
	{		
		if (valor == "+")
		{
			document.getElementById(btu).value="-";
			document.getElementById(cell).style.display="block";
			document.getElementById(btu).src="images/toc2.gif";
			document.getElementById(btu).title="Esconder Detalhes";
			document.getElementById(btu).align="absmiddle";
			document.getElementById('f'+btu).style.color="red";
			//document.getElementById('f'+btu).style.textDecoration="underline";
		}
		else
		{
			document.getElementById(btu).value="+";
			document.getElementById(cell).style.display="none";
			document.getElementById(btu).src="images/toc1.gif";
			document.getElementById(btu).title="Mostrar Detalhes";
			document.getElementById(btu).align="absmiddle";
			document.getElementById('f'+btu).style.color="black";
			//document.getElementById('f'+btu).style.textDecoration="none";
		}
	}
	
	function checar(){
             if (document.login_1.user.value==""){
                alert("Atenção\nDigite o Nome do Usuário !!!.");
                document.login_1.user.focus();
                return false;
                exit;
             }
             if (document.login_1.senha.value==""){
                alert("Atenção\nDigite a Senha do Usuário !!!.");
                document.login_1.senha.focus();
                return false;
                exit;
             }
             return true;
	}