var req;
var req2;

function navigate(month,year) {
	var url = path_to_calendar_ajax + "ajax.calendar.php?month="+month+"&year="+year;
	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);
	pulldata(month,year)
}
function pulldata(month,year) {
	var url = path_to_calendar_ajax + "ajax.calendar.php?request=data&month="+month+"&year="+year;
	if(window.XMLHttpRequest) {
			req2 = new XMLHttpRequest();
	} else if(window.ActiveXObject) {
			req2 = new ActiveXObject("Microsoft.XMLHTTP");
	}
	req2.open("GET", url, true);
	req2.onreadystatechange = callback_for_pulldata;
	req2.send(null);
}

function callback_for_pulldata() {        
	obj = document.getElementById("calData");
	setFade2(0);
	
	if(req2.readyState == 4) {
			if(req2.status == 200) {
					response = req2.responseText;
					obj.innerHTML = response;
					fade2(0);
			} else {
					alert("There was a problem retrieving the data:\n" + req2.statusText);
			}
	}
}
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;
 
	if(navigator.appName=="Microsoft Internet Explorer"){
	// IE
	obj.style.filter = "alpha(opacity:"+amt+")";
	}else if(navigator.appName=="Safari"){
	// Safari<1.2, Konqueror
	obj.style.KHTMLOpacity = amt/100;
	}else if(navigator.appName=="Netscape"){  
	// Safari 1.2, newer Firefox and Mozilla, CSS3
	obj.style.opacity = amt/100;
	}
}
function fade2(amt) {
	if(amt <= 100) {
		setFade2(amt);
		amt += 10;
		setTimeout("fade2("+amt+")", 5);
    }
}

function setFade2(amt) {
	obj = document.getElementById("calData");
	
	amt = (amt == 100)?99.999:amt;
  
	if(navigator.appName=="Microsoft Internet Explorer"){
	// IE
	obj.style.filter = "alpha(opacity:"+amt+")";
	}else if(navigator.appName=="Safari"){
	// Safari<1.2, Konqueror
	obj.style.KHTMLOpacity = amt/100;
	}else if(navigator.appName=="Netscape"){  
	// Safari 1.2, newer Firefox and Mozilla, CSS3
	obj.style.opacity = amt/100;
	}

}