var req;

function navegar(month,year) {

        var url = "secciones/calendar/calendar.php?month="+month+"&year="+year;
        if(window.XMLHttpRequest) {
                req = new XMLHttpRequest();
        } else if(window.ActiveXObject) {
                req = new ActiveXObject("Microsoft.XMLHTTP");
        }
        req.open("POST", url, true);
        req.onreadystatechange = callback;
		req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");


        req.send(null);

}

function callback() {        
        obj = document.getElementById("calendar");
        setFade(0);
        
		if(req.readyState == 4) {
                if(req.status == 200) {
                        response = req.responseText;
                        obj.innerHTML = response;
                        fade(0);
                } else {
                        alert("There was a problem retrieving the data:\n" + req.statusText);
                }
        }
}

function fade(amt) {
	if(amt <= 100) {
		setFade(amt);
		amt += 10;
		setTimeout("fade("+amt+")", 5);
    }
}

function setFade(amt) {
	obj = document.getElementById("calendar");
	
	amt = (amt == 100)?99.999:amt;
  
	// IE
	obj.style.filter = "alpha(opacity:"+amt+")";
  
	// Safari<1.2, Konqueror
	obj.style.KHTMLOpacity = amt/100;
  
	// Mozilla and Firefox
	obj.style.MozOpacity = amt/100;
  
	// Safari 1.2, newer Firefox and Mozilla, CSS3
	obj.style.opacity = amt/100;
}

function navegar2(dia, mes, anio) {
	
        var url = "secciones/calendar/calendar2.php?mes="+mes+"&dia="+dia+"&anio="+anio;
        if(window.XMLHttpRequest) {
                req = new XMLHttpRequest();
        } else if(window.ActiveXObject) {
                req = new ActiveXObject("Microsoft.XMLHTTP");
        }	
        req.open("POST", url, true);
        req.onreadystatechange = callback2;
		req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

        req.send(null);

}

function callback2() {        
        obj = document.getElementById("eventosdeldia");
        setFade2(0);
        
		if(req.readyState == 4) {
                if(req.status == 200) {
                        response = req.responseText;
                        obj.innerHTML = response;
                        fade2(0);
                } else {
                        alert("There was a problem retrieving the data:\n" + req.statusText);
                }
        }
		
		window.addEvent('domready', function(){
				box = new MultiBox('mbagenda2', {descClassName: 'multiBoxDesc', useOverlay: true});
			});
}

function fade2(amt) {
	if(amt <= 100) {
		setFade2(amt);
		amt += 10;
		setTimeout("fade("+amt+")", 5);
    }
}

function setFade2(amt) {
	obj = document.getElementById("eventosdeldia");
	
	obj2 = document.getElementById("calendar");
	
	amt = (amt == 100)?99.999:amt;
  
	// IE
	obj2.style.filter = "alpha(opacity:"+amt+")";
  
	// Safari<1.2, Konqueror
	obj2.style.KHTMLOpacity = amt/100;
  
	// Mozilla and Firefox
	obj2.style.MozOpacity = amt/100;
  
	// Safari 1.2, newer Firefox and Mozilla, CSS3
	obj2.style.opacity = amt/100;
}