function recomendar_el_sitio(){
	if(document.f.txt_tu_nombre.value !=""){
		if(document.f.txt_tu_correo.value !=""){
			if(document.f.txt_correo_amigo.value !=""){
				document.f.submit();
			}
		}
	}
}
function enviar(){
	if(document.f.txt_nombre.value !=""){
		if(document.f.txt_asunto.value !=""){
			if(document.f.txt_correo.value !=""){
				if(document.f.txt_mensaje.value !=""){
				document.f.submit();
				}
			}
		}
	}
}
function abrir_recomendar (){
	w=window.open('http://www.hachaytiza.com/mediotanque/pop_ups/recomendar.php','w','status=yes,width=220,height=355');
	w.focus;
}
function abrir_contacto (){
	w=window.open('http://www.hachaytiza.com/mediotanque/pop_ups/contacto.php','w','status=yes,width=470,height=265');
	w.focus;
}