function filtroSelect(valor)
{

	if(valor == 'todas')
	{
		document.getElementById('ssubcat_conv').innerHTML= '';
		document.getElementById('convenio').innerHTML= '';
		document.getElementById('subcat_conv').innerHTML= '';
		include('convenio','convenio','todas');
	}
	else
	{
		document.getElementById('ssubcat_conv').innerHTML= '';
		document.getElementById('convenio').innerHTML= '';
		include('subcat_conv','subcat_conv',valor);
	}
}