como solucionar un problema de selecion de boton

[iukaeru]

//En Javascript

function enviar(kees)
{
if (kees == "c")
{
document.elformulario.claveparaphp.value = "cualquiercosa";
document.elformulario.submit();
}
else if (kees == "g")
{
document.elformulario.claveparaphp.value = "otracosa";
document.elformulario.submit();
}
};



//En HTML

<form method='post' action='m.php' name="elformulario">
<input type='text' name='nombre' value=''/>
<input type='hidden' name='claveparaphp' value=''/>
<input type="enviar('c')" name='comprobar' value='comprobar'/>
<input type="enviar('g')" name='guardar' value='guardar'/>
</form>