var req;
function navigate(month,year,evt,lib) {
	setFade(0);
	var url = "http://www.floridahospitallapband.com/ifx/includes/xml/calendar.php?month="+month+"&year="+year+"&event="+evt+"&lib="+lib;
	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) {
		var response = req.responseXML;	
		var resp = response.getElementsByTagName("response");
		getObject("calendar").innerHTML = resp[0].getElementsByTagName("content")[0].childNodes[0].nodeValue;
		fade(70);
	}
}

function getObject(obj) {
	var o;
	if(document.getElementById) o = document.getElementById(obj);
	else if(document.all) o = document.all.obj;	
	return o;	
}

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

function setFade(amt) {
	var obj = getObject("calendar");
	amt = (amt == 100)?99.999:amt;
	obj.style.filter = "alpha(opacity:"+amt+")";
	obj.style.KHTMLOpacity = amt/100;
	obj.style.MozOpacity = amt/100;
	obj.style.opacity = amt/100;
}

function showPopEvent(obj,nme,evt,tme) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
	var popevent = document.createElement("div");
	popevent.setAttribute("id","popevent");
	popevent.style.position = "absolute";
	popevent.style.top = curtop+15+"px";
	popevent.style.left = curleft+"px";
	var output = '<div id="popheader">'+nme+'</div>';
	output +='<div  id="popcontent">\n';
	output +='<p>'+evt+'</p>';
	output +='<p id="poptime">'+tme+'</p>';
	output += '</div> \n';
	popevent.innerHTML = output;
	document.body.appendChild(popevent);
}

function hidePopEvent() {
	document.body.removeChild(getObject("popevent"));	
}