// JavaScript Document

var req;
var theday = 0;

//load the xml document
function loadXMLDoc(url,daynum) {
	theday = daynum;
	
	req = false;
    // branch for native XMLHttpRequest object
    if(window.XMLHttpRequest && !(window.ActiveXObject)) {
    	try {
			req = new XMLHttpRequest();
        } catch(e) {
			req = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
       	try {
        	req = new ActiveXObject("Msxml2.XMLHTTP");
      	} catch(e) {
        	try {
          		req = new ActiveXObject("Microsoft.XMLHTTP");
        	} catch(e) {
          		req = false;
        	}
		}
    }
	if(req) {
		req.onreadystatechange = processReqChange;
		req.open("GET", url, true);
		req.send("");
	}
}

// test document (homepage)
function processReqChange() {
    // only if req shows "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            getXmlData();
        } else {
            alert("There was a problem retrieving the XML data:\n" +
                req.statusText);
        }
    }
}


// this script shows daily sched
function getXmlData() {
/*
<!ELEMENT schedule (day+) >
	<!ELEMENT classevent (daynum,classname,classlevel,classtime,classdesc,extra?) >
		<!ELEMENT daynum		(#PCDATA) >
		<!ELEMENT classname		(#PCDATA) >
		<!ELEMENT classlevel	(#PCDATA) >
		<!ELEMENT classtime 	(#PCDATA) >
		<!ELEMENT classdesc		(#PCDATA) >
		<!ELEMENT extra 		(#PCDATA) >
*/
	var xmldata = req.responseXML.documentElement;
	var classeventList = xmldata.getElementsByTagName("classevent");
	var q = classeventList.length;	
	
	var output = "";
	
	var classeventArray = new Array();
	var data = new Array();
	
	for (t=0 ; t < q ; t++) {
		classeventArray = classeventList[t].childNodes;
		z = classeventArray.length;
		
		data = new Array();
		
		for (i=0 ; i < z ; i++) {
			if ((classeventArray[i].nodeType == 1)&&(classeventArray[i].firstChild)) {
				data[data.length] = classeventArray[i].firstChild.nodeValue;
			}
		}
		
		if (data[0] == theday) {		
			output += "<p>";
			if ((data[4])&&(data[3])) { output += "<a href='" + data[4] + "'>" + data[3] + "</a><br>"; }
			if (data[1]) { output += data[1]; }
			if (data[5]) { output += "<br><strong><em>" + data[5] + "</em></strong>"; }
			output += "</p>";
		}
	}
			
	document.getElementById("home-schedule").innerHTML = output;
}