function valida_login(){
    var asd=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(document.loginf.email.value);
    if (asd ==false){
        document.getElementById("sugiere_login").innerHTML = "Ingrese su Email";
       document.loginf.email.focus()
       return (false);     
    }
    //valido el password
    if (document.loginf.pass.value.length<5){
       document.getElementById("sugiere_login").innerHTML = "Ingrese el password";
       document.loginf.pass.focus()
       return (false);
    }
 return (true);
}