function cambiaestado(tit,txt) {

	var tit = document.getElementById(tit);

	var txt = document.getElementById(txt);

	if (tit.className == 'viaje_down') {

		tit.className='viaje_up';

		txt.style.display='';

	}

	else {

		tit.className='viaje_down';

		txt.style.display='none';

	}

}



/* FUNCIONES PARA LA SECCION DE FOTOS */



var req;



function navigate(month,year,idii) {

        var url = "calendar.php?month="+month+"&year="+year+"&idii="+idii;

        if(window.XMLHttpRequest) {

                req = new XMLHttpRequest();

        } else if(window.ActiveXObject) {

                req = new ActiveXObject("Microsoft.XMLHTTP");

        }

        req.open("GET", url, true);

        req.onreadystatechange = callback;

        req.send(null);

}



function callback() {

        if(req.readyState == 4) {

                if(req.status == 200) {

                        response = req.responseText;

                        document.getElementById("calendar").innerHTML = response;

                } else {

                        alert("There was a problem retrieving the data:\n" + req.statusText);

                }

        }

}



function change_pic(id,idi) {

        var url = "gal.php?pic="+id+"&idi="+idi;

        if(window.XMLHttpRequest) {

                req = new XMLHttpRequest();

        } else if(window.ActiveXObject) {

                req = new ActiveXObject("Microsoft.XMLHTTP");

        }

        req.open("GET", url, true);

        req.onreadystatechange = callback3;

        req.send(null);

}



function callback3() {

        if(req.readyState == 4) {

                if(req.status == 200) {

                        response = req.responseText;

                        document.getElementById("IMG_AJAX").innerHTML = response;

                } else {

                        alert("There was a problem retrieving the data:\n" + req.statusText);

                }

        }

}



function carga_thumbs(gal,primer,idi) {

        var url = "thumbs.php?gal="+gal+"&primer="+primer+"&idi="+idi;

        if(window.XMLHttpRequest) {

                req = new XMLHttpRequest();

        } else if(window.ActiveXObject) {

                req = new ActiveXObject("Microsoft.XMLHTTP");

        }

        req.open("GET", url, true);

        req.onreadystatechange = callback2;

        req.send(null);

}



function callback2() {

        if(req.readyState == 4) {

                if(req.status == 200) {

                        response = req.responseText;

                        document.getElementById("THUMB_AJAX").innerHTML = response;

                } else {

                        alert("There was a problem retrieving the data:\n" + req.statusText);

                }

        }

}